31630934 has 16 divisors (see below), whose sum is σ = 52116480. Its totient is φ = 14331240.

The previous prime is 31630927. The next prime is 31630981. The reversal of 31630934 is 43903613.

It is a junction number, because it is equal to n+sod(n) for n = 31630897 and 31630906.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 17222 + ... + 18969.

It is an arithmetic number, because the mean of its divisors is an integer number (3257280).

Almost surely, 2^31630934 is an apocalyptic number.

31630934 is a deficient number, since it is larger than the sum of its proper divisors (20485546).

31630934 is a wasteful number, since it uses less digits than its factorization.

31630934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36235.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 31630934 is about 5624.1385118078. The cubic root of 31630934 is about 316.2549550068.

The spelling of 31630934 in words is "thirty-one million, six hundred thirty thousand, nine hundred thirty-four".