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30201202131 = 310067067377
BaseRepresentation
bin11100001000001000…
…011100010111010011
32212221202220000210220
4130020020130113103
5443323001432011
621512500324123
72116261660662
oct341010342723
985852800726
1030201202131
1111898878191
125a2a3a3643
132b03c80609
141667060dd9
15bbb61e506
hex70821c5d3

30201202131 has 4 divisors (see below), whose sum is σ = 40268269512. Its totient is φ = 20134134752.

The previous prime is 30201202121. The next prime is 30201202133. The reversal of 30201202131 is 13120210203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30201202131 - 25 = 30201202099 is a prime.

It is a super-2 number, since 2×302012021312 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30201202131.

It is not an unprimeable number, because it can be changed into a prime (30201202133) 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, 5033533686 + ... + 5033533691.

It is an arithmetic number, because the mean of its divisors is an integer number (10067067378).

Almost surely, 230201202131 is an apocalyptic number.

30201202131 is a deficient number, since it is larger than the sum of its proper divisors (10067067381).

30201202131 is a wasteful number, since it uses less digits than its factorization.

30201202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067067380.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30201202131 its reverse (13120210203), we get a palindrome (43321412334).

The spelling of 30201202131 in words is "thirty billion, two hundred one million, two hundred two thousand, one hundred thirty-one".

Divisors: 1 3 10067067377 30201202131