30980923 has 2 divisors, whose sum is σ = 30980924. Its totient is φ = 30980922.

The previous prime is 30980899. The next prime is 30980933. The reversal of 30980923 is 32908903.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30980923 - 2¹³ = 30972731 is a prime.

It is not a weakly prime, because it can be changed into another prime (30980933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15490461 + 15490462.

It is an arithmetic number, because the mean of its divisors is an integer number (15490462).

Almost surely, 2^30980923 is an apocalyptic number.

30980923 is a deficient number, since it is larger than the sum of its proper divisors (1).

30980923 is an equidigital number, since it uses as much as digits as its factorization.

30980923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 30980923 is about 5566.0509340106. The cubic root of 30980923 is about 314.0736131790.

The spelling of 30980923 in words is "thirty million, nine hundred eighty thousand, nine hundred twenty-three".