30996923 has 16 divisors (see below), whose sum is σ = 33745920. Its totient is φ = 28377216.

The previous prime is 30996919. The next prime is 30996941. The reversal of 30996923 is 32969903.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30996923 - 2² = 30996919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30996323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91811 + ... + 92147.

It is an arithmetic number, because the mean of its divisors is an integer number (2109120).

Almost surely, 2^30996923 is an apocalyptic number.

30996923 is a deficient number, since it is larger than the sum of its proper divisors (2748997).

30996923 is a wasteful number, since it uses less digits than its factorization.

30996923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 30996923 is about 5567.4880332157. The cubic root of 30996923 is about 314.1276713165.

The spelling of 30996923 in words is "thirty million, nine hundred ninety-six thousand, nine hundred twenty-three".