30936623 has 2 divisors, whose sum is σ = 30936624. Its totient is φ = 30936622.

The previous prime is 30936613. The next prime is 30936641. The reversal of 30936623 is 32663903.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30936623 - 2²² = 26742319 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30936623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30936613) 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 as a sum of consecutive naturals, namely, 15468311 + 15468312.

It is an arithmetic number, because the mean of its divisors is an integer number (15468312).

Almost surely, 2^30936623 is an apocalyptic number.

30936623 is a deficient number, since it is larger than the sum of its proper divisors (1).

30936623 is an equidigital number, since it uses as much as digits as its factorization.

30936623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 32.

The square root of 30936623 is about 5562.0700283258. The cubic root of 30936623 is about 313.9238425388.

The spelling of 30936623 in words is "thirty million, nine hundred thirty-six thousand, six hundred twenty-three".