31525452513 has 6 divisors (see below), whose sum is σ = 45536764754. Its totient is φ = 21016968336.

The previous prime is 31525452503. The next prime is 31525452533.

31525452513 is a `hidden beast` number, since 3 + 152 + 5 + 452 + 51 + 3 = 666.

31525452513 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 25219980864 + 6305471649 = 158808^2 + 79407^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31525452513 is a prime.

It is a super-2 number, since 2×31525452513² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31525452503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1751414020 + ... + 1751414037.

Almost surely, 2^31525452513 is an apocalyptic number.

It is an amenable number.

31525452513 is a deficient number, since it is larger than the sum of its proper divisors (14011312241).

31525452513 is a wasteful number, since it uses less digits than its factorization.

31525452513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502828063 (or 3502828060 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 31525452513 in words is "thirty-one billion, five hundred twenty-five million, four hundred fifty-two thousand, five hundred thirteen".