30232313921 has 2 divisors, whose sum is σ = 30232313922. Its totient is φ = 30232313920.

The previous prime is 30232313911. The next prime is 30232313971. The reversal of 30232313921 is 12931323203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30218954896 + 13359025 = 173836^2 + 3655^2 .

It is a cyclic number.

It is not a de Polignac number, because 30232313921 - 2⁶ = 30232313857 is a prime.

It is not a weakly prime, because it can be changed into another prime (30232313911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15116156960 + 15116156961.

It is an arithmetic number, because the mean of its divisors is an integer number (15116156961).

Almost surely, 2^30232313921 is an apocalyptic number.

It is an amenable number.

30232313921 is a deficient number, since it is larger than the sum of its proper divisors (1).

30232313921 is an equidigital number, since it uses as much as digits as its factorization.

30232313921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 29.

The spelling of 30232313921 in words is "thirty billion, two hundred thirty-two million, three hundred thirteen thousand, nine hundred twenty-one".