31504513113 has 16 divisors (see below), whose sum is σ = 47086395840. Its totient is φ = 20817139392.

The previous prime is 31504513087. The next prime is 31504513147. The reversal of 31504513113 is 31131540513.

It is a happy number.

31504513113 is a `hidden beast` number, since 31 + 5 + 0 + 4 + 513 + 113 = 666.

It is not a de Polignac number, because 31504513113 - 2⁸ = 31504512857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (31504513163) 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, 5159931 + ... + 5166032.

It is an arithmetic number, because the mean of its divisors is an integer number (2942899740).

Almost surely, 2^31504513113 is an apocalyptic number.

It is an amenable number.

31504513113 is a deficient number, since it is larger than the sum of its proper divisors (15581882727).

31504513113 is a wasteful number, since it uses less digits than its factorization.

31504513113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326085 (or 10326079 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The spelling of 31504513113 in words is "thirty-one billion, five hundred four million, five hundred thirteen thousand, one hundred thirteen".