30947023 has 2 divisors, whose sum is σ = 30947024. Its totient is φ = 30947022.

The previous prime is 30947011. The next prime is 30947027. The reversal of 30947023 is 32074903.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30947023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30946982 and 30947000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30947027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15473511 + 15473512.

It is an arithmetic number, because the mean of its divisors is an integer number (15473512).

Almost surely, 2^30947023 is an apocalyptic number.

30947023 is a deficient number, since it is larger than the sum of its proper divisors (1).

30947023 is an equidigital number, since it uses as much as digits as its factorization.

30947023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30947023 is about 5563.0048534942. The cubic root of 30947023 is about 313.9590159770.

The spelling of 30947023 in words is "thirty million, nine hundred forty-seven thousand, twenty-three".