30997088 has 12 divisors (see below), whose sum is σ = 61025580. Its totient is φ = 15498528.

The previous prime is 30997079. The next prime is 30997121. The reversal of 30997088 is 88079903.

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 as a sum of consecutive naturals, namely, 484298 + ... + 484361.

It is an arithmetic number, because the mean of its divisors is an integer number (5085465).

Almost surely, 2^30997088 is an apocalyptic number.

It is an amenable number.

30997088 is a deficient number, since it is larger than the sum of its proper divisors (30028492).

30997088 is an equidigital number, since it uses as much as digits as its factorization.

30997088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968669 (or 968661 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 30997088 is about 5567.5028513688. The cubic root of 30997088 is about 314.1282286941.

The spelling of 30997088 in words is "thirty million, nine hundred ninety-seven thousand, eighty-eight".