31900148 has 12 divisors (see below), whose sum is σ = 63800352. Its totient is φ = 13671480.

The previous prime is 31900139. The next prime is 31900157. The reversal of 31900148 is 84100913.

It is an interprime number because it is at equal distance from previous prime (31900139) and next prime (31900157).

31900148 is an admirable number.

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, 569618 + ... + 569673.

It is an arithmetic number, because the mean of its divisors is an integer number (5316696).

Almost surely, 2^31900148 is an apocalyptic number.

It is an amenable number.

31900148 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31900148 is a wasteful number, since it uses less digits than its factorization.

31900148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139302 (or 1139300 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 31900148 is about 5648.0216005253. The cubic root of 31900148 is about 317.1496472240.

The spelling of 31900148 in words is "thirty-one million, nine hundred thousand, one hundred forty-eight".