30431996 has 24 divisors (see below), whose sum is σ = 64068480. Its totient is φ = 12355632.

The previous prime is 30431981. The next prime is 30432011. The reversal of 30431996 is 69913403.

It is an interprime number because it is at equal distance from previous prime (30431981) and next prime (30432011).

It is a super-2 number, since 2×30431996² = 1852212761088032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28070 + ... + 29133.

It is an arithmetic number, because the mean of its divisors is an integer number (2669520).

Almost surely, 2^30431996 is an apocalyptic number.

It is an amenable number.

30431996 is an abundant number, since it is smaller than the sum of its proper divisors (33636484).

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

30431996 is a wasteful number, since it uses less digits than its factorization.

30431996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57233 (or 57231 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 30431996 is about 5516.5202800316. The cubic root of 30431996 is about 312.2076061841.

The spelling of 30431996 in words is "thirty million, four hundred thirty-one thousand, nine hundred ninety-six".