31869396 has 48 divisors (see below), whose sum is σ = 88984000. Its totient is φ = 9805536.

The previous prime is 31869379. The next prime is 31869401. The reversal of 31869396 is 69396813.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9946 + ... + 12753.

Almost surely, 2^31869396 is an apocalyptic number.

31869396 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31869396 is an abundant number, since it is smaller than the sum of its proper divisors (57114604).

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

31869396 is a wasteful number, since it uses less digits than its factorization.

31869396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22725 (or 22717 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 31869396 is about 5645.2985749206. The cubic root of 31869396 is about 317.0477028525.

The spelling of 31869396 in words is "thirty-one million, eight hundred sixty-nine thousand, three hundred ninety-six".