230391137 has 2 divisors, whose sum is σ = 230391138. Its totient is φ = 230391136.

The previous prime is 230391107. The next prime is 230391197. The reversal of 230391137 is 731193032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147962896 + 82428241 = 12164^2 + 9079^2 .

It is a cyclic number.

It is not a de Polignac number, because 230391137 - 2¹⁰ = 230390113 is a prime.

It is equal to p_12662813 and since 230391137 and 12662813 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 (230391107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115195568 + 115195569.

It is an arithmetic number, because the mean of its divisors is an integer number (115195569).

Almost surely, 2^230391137 is an apocalyptic number.

It is an amenable number.

230391137 is a deficient number, since it is larger than the sum of its proper divisors (1).

230391137 is an equidigital number, since it uses as much as digits as its factorization.

230391137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 230391137 is about 15178.6408153036. The cubic root of 230391137 is about 613.0396849338.

The spelling of 230391137 in words is "two hundred thirty million, three hundred ninety-one thousand, one hundred thirty-seven".