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30344770031 = 146021207811
BaseRepresentation
bin11100010000101100…
…000111000111101111
32220022210001000221112
4130100230013013233
5444121230120111
621535025422235
72122654201202
oct342054070757
986283030845
1030344770031
1111961916944
125a6a49a97b
132b27939934
14167c153939
15bc902ce8b
hex710b071ef

30344770031 has 4 divisors (see below), whose sum is σ = 30345123864. Its totient is φ = 30344416200.

The previous prime is 30344770009. The next prime is 30344770073. The reversal of 30344770031 is 13007744303.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30344770031 is a prime.

It is a super-2 number, since 2×303447700312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30344770031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30344770091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42116 + ... + 249926.

It is an arithmetic number, because the mean of its divisors is an integer number (7586280966).

Almost surely, 230344770031 is an apocalyptic number.

30344770031 is a deficient number, since it is larger than the sum of its proper divisors (353833).

30344770031 is a wasteful number, since it uses less digits than its factorization.

30344770031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353832.

The product of its (nonzero) digits is 21168, while the sum is 32.

The spelling of 30344770031 in words is "thirty billion, three hundred forty-four million, seven hundred seventy thousand, thirty-one".

Divisors: 1 146021 207811 30344770031