31854996 has 36 divisors (see below), whose sum is σ = 81328884. Its totient is φ = 10512000.

The previous prime is 31854989. The next prime is 31854997. The reversal of 31854996 is 69945813.

It is a happy number.

31854996 is a `hidden beast` number, since 3 + 18 + 549 + 96 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17338896 + 14516100 = 4164^2 + 3810^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31854997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 745 + ... + 8016.

Almost surely, 2^31854996 is an apocalyptic number.

31854996 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31854996 is an abundant number, since it is smaller than the sum of its proper divisors (49473888).

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

31854996 is a wasteful number, since it uses less digits than its factorization.

31854996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8872 (or 8867 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 31854996 is about 5644.0230332627. The cubic root of 31854996 is about 316.9999436091. Note that the first 4 decimals are identical.

The spelling of 31854996 in words is "thirty-one million, eight hundred fifty-four thousand, nine hundred ninety-six".