30488931 has 12 divisors (see below), whose sum is σ = 48043320. Its totient is φ = 18478080.

The previous prime is 30488917. The next prime is 30488933. The reversal of 30488931 is 13988403.

It is not a de Polignac number, because 30488931 - 2¹⁰ = 30487907 is a prime.

It is a super-2 number, since 2×30488931² = 1859149827045522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30488933) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 153886 + ... + 154083.

It is an arithmetic number, because the mean of its divisors is an integer number (4003610).

Almost surely, 2^30488931 is an apocalyptic number.

30488931 is a deficient number, since it is larger than the sum of its proper divisors (17554389).

30488931 is a wasteful number, since it uses less digits than its factorization.

30488931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307986 (or 307983 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30488931 is about 5521.6782774805. The cubic root of 30488931 is about 312.4021872010.

The spelling of 30488931 in words is "thirty million, four hundred eighty-eight thousand, nine hundred thirty-one".