31231096 has 16 divisors (see below), whose sum is σ = 63063000. Its totient is φ = 14414304.

The previous prime is 31231073. The next prime is 31231097. The reversal of 31231096 is 69013213.

It is a super-2 number, since 2×31231096² = 1950762714722432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31231096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150046 + ... + 150253.

Almost surely, 2^31231096 is an apocalyptic number.

It is an amenable number.

31231096 is an abundant number, since it is smaller than the sum of its proper divisors (31831904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31231096 is a wasteful number, since it uses less digits than its factorization.

31231096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300318 (or 300314 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 31231096 is about 5588.4788628034. The cubic root of 31231096 is about 314.9167362023.

The spelling of 31231096 in words is "thirty-one million, two hundred thirty-one thousand, ninety-six".