230121137 has 2 divisors, whose sum is σ = 230121138. Its totient is φ = 230121136.

The previous prime is 230121121. The next prime is 230121139. The reversal of 230121137 is 731121032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219158416 + 10962721 = 14804^2 + 3311^2 .

It is a cyclic number.

It is not a de Polignac number, because 230121137 - 2⁴ = 230121121 is a prime.

Together with 230121139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230121139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115060568 + 115060569.

It is an arithmetic number, because the mean of its divisors is an integer number (115060569).

Almost surely, 2^230121137 is an apocalyptic number.

It is an amenable number.

230121137 is a deficient number, since it is larger than the sum of its proper divisors (1).

230121137 is an equidigital number, since it uses as much as digits as its factorization.

230121137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 230121137 is about 15169.7441309997. The cubic root of 230121137 is about 612.8001134841.

Adding to 230121137 its reverse (731121032), we get a palindrome (961242169).

The spelling of 230121137 in words is "two hundred thirty million, one hundred twenty-one thousand, one hundred thirty-seven".