230974921 has 2 divisors, whose sum is σ = 230974922. Its totient is φ = 230974920.

The previous prime is 230974889. The next prime is 230974927. The reversal of 230974921 is 129479032.

230974921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is the 6205-th star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173290896 + 57684025 = 13164^2 + 7595^2 .

It is a cyclic number.

It is not a de Polignac number, because 230974921 - 2⁵ = 230974889 is a prime.

It is a Chen prime.

It is equal to p_12693286 and since 230974921 and 12693286 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (230974927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115487460 + 115487461.

It is an arithmetic number, because the mean of its divisors is an integer number (115487461).

Almost surely, 2^230974921 is an apocalyptic number.

It is an amenable number.

230974921 is a deficient number, since it is larger than the sum of its proper divisors (1).

230974921 is an equidigital number, since it uses as much as digits as its factorization.

230974921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 230974921 is about 15197.8590926485. The cubic root of 230974921 is about 613.5570383230.

The spelling of 230974921 in words is "two hundred thirty million, nine hundred seventy-four thousand, nine hundred twenty-one".