31885281323 has 12 divisors (see below), whose sum is σ = 37719706680. Its totient is φ = 26867014272.

The previous prime is 31885281313. The next prime is 31885281347. The reversal of 31885281323 is 32318258813.

It is not a de Polignac number, because 31885281323 - 2²² = 31881087019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31885281313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5511686 + ... + 5517467.

It is an arithmetic number, because the mean of its divisors is an integer number (3143308890).

Almost surely, 2^31885281323 is an apocalyptic number.

31885281323 is a deficient number, since it is larger than the sum of its proper divisors (5834425357).

31885281323 is a wasteful number, since it uses less digits than its factorization.

31885281323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11029226 (or 11029219 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The spelling of 31885281323 in words is "thirty-one billion, eight hundred eighty-five million, two hundred eighty-one thousand, three hundred twenty-three".