115315231 has 2 divisors, whose sum is σ = 115315232. Its totient is φ = 115315230.

The previous prime is 115315177. The next prime is 115315271. The reversal of 115315231 is 132513511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115315231 - 2¹⁹ = 114790943 is a prime.

It is a super-2 number, since 2×115315231² = 26595205001166722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115315271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57657615 + 57657616.

It is an arithmetic number, because the mean of its divisors is an integer number (57657616).

Almost surely, 2^115315231 is an apocalyptic number.

115315231 is a deficient number, since it is larger than the sum of its proper divisors (1).

115315231 is an equidigital number, since it uses as much as digits as its factorization.

115315231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 22.

The square root of 115315231 is about 10738.4929575802. The cubic root of 115315231 is about 486.7383412814.

Adding to 115315231 its reverse (132513511), we get a palindrome (247828742).

It can be divided in two parts, 1153 and 15231, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 115315231 in words is "one hundred fifteen million, three hundred fifteen thousand, two hundred thirty-one".