31532423513 has 16 divisors (see below), whose sum is σ = 32286779712. Its totient is φ = 30789720000.

The previous prime is 31532423509. The next prime is 31532423537.

31532423513 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 31532423513 - 2² = 31532423509 is a prime.

It is a super-2 number, since 2×31532423513² (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 31532423513.

It is not an unprimeable number, because it can be changed into a prime (31532423113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2149343 + ... + 2163963.

It is an arithmetic number, because the mean of its divisors is an integer number (2017923732).

Almost surely, 2^31532423513 is an apocalyptic number.

It is an amenable number.

31532423513 is a deficient number, since it is larger than the sum of its proper divisors (754356199).

31532423513 is a wasteful number, since it uses less digits than its factorization.

31532423513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15016.

The product of its digits is 32400, while the sum is 32.

The spelling of 31532423513 in words is "thirty-one billion, five hundred thirty-two million, four hundred twenty-three thousand, five hundred thirteen".