31796136 has 24 divisors (see below), whose sum is σ = 86114730. Its totient is φ = 10598688.

The previous prime is 31796129. The next prime is 31796147. The reversal of 31796136 is 63169713.

31796136 = T₄₃₁ + T₄₃₂ + ... + T₆₄₆.

31796136 is a `hidden beast` number, since 31 + 7 + 9 + 613 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20304036 + 11492100 = 4506^2 + 3390^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×31796136³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 31796136.

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 5 ways as a sum of consecutive naturals, for example, 220735 + ... + 220878.

Almost surely, 2^31796136 is an apocalyptic number.

31796136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31796136 is an abundant number, since it is smaller than the sum of its proper divisors (54318594).

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

31796136 is a wasteful number, since it uses less digits than its factorization.

31796136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441625 (or 441618 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 31796136 is about 5638.8062566469. The cubic root of 31796136 is about 316.8045779106.

The spelling of 31796136 in words is "thirty-one million, seven hundred ninety-six thousand, one hundred thirty-six".