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30520362402021 = 31723310597242371
BaseRepresentation
bin1101111000010000100110…
…10111000000000011100101
311000001201101112100200002110
412330020103113000003211
513000021200233331041
6144524505543231233
76300011014002252
oct674102327000345
9130051345320073
1030520362402021
1197a7681a03578
12350b073748519
13140509a070acb
1477729ca70429
1537dd883b1516
hex1bc2135c00e5

30520362402021 has 32 divisors (see below), whose sum is σ = 43276757666688. Its totient is φ = 19065964308480.

The previous prime is 30520362402007. The next prime is 30520362402071. The reversal of 30520362402021 is 12020426302503.

It is not a de Polignac number, because 30520362402021 - 218 = 30520362139877 is a prime.

It is a super-3 number, since 3×305203624020213 (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30520362402021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30520362402071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125802966 + ... + 126045336.

It is an arithmetic number, because the mean of its divisors is an integer number (1352398677084).

Almost surely, 230520362402021 is an apocalyptic number.

It is an amenable number.

30520362402021 is a deficient number, since it is larger than the sum of its proper divisors (12756395264667).

30520362402021 is a wasteful number, since it uses less digits than its factorization.

30520362402021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253221.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 30520362402021 its reverse (12020426302503), we get a palindrome (42540788704524).

The spelling of 30520362402021 in words is "thirty trillion, five hundred twenty billion, three hundred sixty-two million, four hundred two thousand, twenty-one".

Divisors: 1 3 17 51 233 699 3961 10597 11883 31791 180149 242371 540447 727113 2469101 4120307 7407303 12360921 41974717 56472443 125924151 169417329 960031531 2568405487 2880094593 7705216461 43662893279 130988679837 598438478471 1795315435413 10173454134007 30520362402021