30995968 has 20 divisors (see below), whose sum is σ = 61932420. Its totient is φ = 15497728.

The previous prime is 30995957. The next prime is 30995969. The reversal of 30995968 is 86959903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30995969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29758 + ... + 30781.

It is an arithmetic number, because the mean of its divisors is an integer number (3096621).

Almost surely, 2^30995968 is an apocalyptic number.

It is an amenable number.

30995968 is a deficient number, since it is larger than the sum of its proper divisors (30936452).

30995968 is an frugal number, since it uses more digits than its factorization.

30995968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60557 (or 60541 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 30995968 is about 5567.4022667668. The cubic root of 30995968 is about 314.1244452435.

The spelling of 30995968 in words is "thirty million, nine hundred ninety-five thousand, nine hundred sixty-eight".