30997323 has 24 divisors (see below), whose sum is σ = 53068288. Its totient is φ = 17711784.

The previous prime is 30997319. The next prime is 30997331. The reversal of 30997323 is 32379903.

It is not a de Polignac number, because 30997323 - 2² = 30997319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30997523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7411 + ... + 10812.

Almost surely, 2^30997323 is an apocalyptic number.

30997323 is a deficient number, since it is larger than the sum of its proper divisors (22070965).

30997323 is an equidigital number, since it uses as much as digits as its factorization.

30997323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18245 (or 18233 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 36.

The square root of 30997323 is about 5567.5239559431. The cubic root of 30997323 is about 314.1290225315.

The spelling of 30997323 in words is "thirty million, nine hundred ninety-seven thousand, three hundred twenty-three".