31023632013 has 48 divisors (see below), whose sum is σ = 47009120256. Its totient is φ = 18166500000.

The previous prime is 31023631997. The next prime is 31023632023.

It is a happy number.

31023632013 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31023632013 - 2⁴ = 31023631997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023632023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8449168 + ... + 8452838.

It is an arithmetic number, because the mean of its divisors is an integer number (979356672).

Almost surely, 2^31023632013 is an apocalyptic number.

31023632013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31023632013 is a deficient number, since it is larger than the sum of its proper divisors (15985488243).

31023632013 is a wasteful number, since it uses less digits than its factorization.

31023632013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4478 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The spelling of 31023632013 in words is "thirty-one billion, twenty-three million, six hundred thirty-two thousand, thirteen".