230156137 has 2 divisors, whose sum is σ = 230156138. Its totient is φ = 230156136.

The previous prime is 230156117. The next prime is 230156159. The reversal of 230156137 is 731651032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197711721 + 32444416 = 14061^2 + 5696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230156137 is a prime.

It is not a weakly prime, because it can be changed into another prime (230156107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115078068 + 115078069.

It is an arithmetic number, because the mean of its divisors is an integer number (115078069).

Almost surely, 2^230156137 is an apocalyptic number.

It is an amenable number.

230156137 is a deficient number, since it is larger than the sum of its proper divisors (1).

230156137 is an equidigital number, since it uses as much as digits as its factorization.

230156137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 230156137 is about 15170.8976992135. The cubic root of 230156137 is about 612.8311796101.

The spelling of 230156137 in words is "two hundred thirty million, one hundred fifty-six thousand, one hundred thirty-seven".