115431361 has 2 divisors, whose sum is σ = 115431362. Its totient is φ = 115431360.

The previous prime is 115431347. The next prime is 115431373. The reversal of 115431361 is 163134511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81558961 + 33872400 = 9031^2 + 5820^2 .

It is a cyclic number.

It is not a de Polignac number, because 115431361 - 2²⁵ = 81876929 is a prime.

It is not a weakly prime, because it can be changed into another prime (115431311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57715680 + 57715681.

It is an arithmetic number, because the mean of its divisors is an integer number (57715681).

Almost surely, 2^115431361 is an apocalyptic number.

It is an amenable number.

115431361 is a deficient number, since it is larger than the sum of its proper divisors (1).

115431361 is an equidigital number, since it uses as much as digits as its factorization.

115431361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 115431361 is about 10743.8987802380. The cubic root of 115431361 is about 486.9016789398.

Adding to 115431361 its reverse (163134511), we get a palindrome (278565872).

The spelling of 115431361 in words is "one hundred fifteen million, four hundred thirty-one thousand, three hundred sixty-one".