30631472 has 20 divisors (see below), whose sum is σ = 61263936. Its totient is φ = 14821440.

The previous prime is 30631463. The next prime is 30631481. The reversal of 30631472 is 27413603.

It is an interprime number because it is at equal distance from previous prime (30631463) and next prime (30631481).

30631472 is an admirable 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, 30383 + ... + 31374.

Almost surely, 2^30631472 is an apocalyptic number.

It is an amenable number.

30631472 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.

30631472 is a wasteful number, since it uses less digits than its factorization.

30631472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61796 (or 61790 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 30631472 is about 5534.5706247188. The cubic root of 30631472 is about 312.8882751359. Note that the first 3 decimals are identical.

The spelling of 30631472 in words is "thirty million, six hundred thirty-one thousand, four hundred seventy-two".