31504505323 has 16 divisors (see below), whose sum is σ = 33183109440. Its totient is φ = 29852798976.

The previous prime is 31504505297. The next prime is 31504505327. The reversal of 31504505323 is 32350540513.

It is a cyclic number.

It is not a de Polignac number, because 31504505323 - 2²⁵ = 31470950891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31504505327) 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, 1203963 + ... + 1229851.

It is an arithmetic number, because the mean of its divisors is an integer number (2073944340).

Almost surely, 2^31504505323 is an apocalyptic number.

31504505323 is a deficient number, since it is larger than the sum of its proper divisors (1678604117).

31504505323 is a wasteful number, since it uses less digits than its factorization.

31504505323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26406.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 31504505323 in words is "thirty-one billion, five hundred four million, five hundred five thousand, three hundred twenty-three".