31374630 has 48 divisors (see below), whose sum is σ = 93229344. Its totient is φ = 7171200.

The previous prime is 31374617. The next prime is 31374653. The reversal of 31374630 is 3647313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31374594 and 31374603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24271 + ... + 25530.

It is an arithmetic number, because the mean of its divisors is an integer number (1942278).

Almost surely, 2^31374630 is an apocalyptic number.

31374630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31374630 is an abundant number, since it is smaller than the sum of its proper divisors (61854714).

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

31374630 is a wasteful number, since it uses less digits than its factorization.

31374630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49821 (or 49818 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 31374630 is about 5601.3060976883. The cubic root of 31374630 is about 315.3984376102.

The spelling of 31374630 in words is "thirty-one million, three hundred seventy-four thousand, six hundred thirty".