118331137 has 2 divisors, whose sum is σ = 118331138. Its totient is φ = 118331136.

The previous prime is 118331131. The next prime is 118331149. The reversal of 118331137 is 731133811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110691441 + 7639696 = 10521^2 + 2764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118331137 is a prime.

It is not a weakly prime, because it can be changed into another prime (118331131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59165568 + 59165569.

It is an arithmetic number, because the mean of its divisors is an integer number (59165569).

Almost surely, 2^118331137 is an apocalyptic number.

It is an amenable number.

118331137 is a deficient number, since it is larger than the sum of its proper divisors (1).

118331137 is an equidigital number, since it uses as much as digits as its factorization.

118331137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 118331137 is about 10878.0116289697. The cubic root of 118331137 is about 490.9451934905.

Adding to 118331137 its reverse (731133811), we get a palindrome (849464948).

The spelling of 118331137 in words is "one hundred eighteen million, three hundred thirty-one thousand, one hundred thirty-seven".