31812468 has 12 divisors (see below), whose sum is σ = 74229120. Its totient is φ = 10604152.

The previous prime is 31812437. The next prime is 31812481. The reversal of 31812468 is 86421813.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325508 + ... + 1325531.

It is an arithmetic number, because the mean of its divisors is an integer number (6185760).

Almost surely, 2^31812468 is an apocalyptic number.

It is an amenable number.

31812468 is an abundant number, since it is smaller than the sum of its proper divisors (42416652).

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

31812468 is a wasteful number, since it uses less digits than its factorization.

31812468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651046 (or 2651044 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 31812468 is about 5640.2542495884. The cubic root of 31812468 is about 316.8588105668.

The spelling of 31812468 in words is "thirty-one million, eight hundred twelve thousand, four hundred sixty-eight".