115331813 has 2 divisors, whose sum is σ = 115331814. Its totient is φ = 115331812.

The previous prime is 115331803. The next prime is 115331819. The reversal of 115331813 is 318133511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82864609 + 32467204 = 9103^2 + 5698^2 .

It is a cyclic number.

It is not a de Polignac number, because 115331813 - 2¹⁴ = 115315429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115331819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57665906 + 57665907.

It is an arithmetic number, because the mean of its divisors is an integer number (57665907).

Almost surely, 2^115331813 is an apocalyptic number.

It is an amenable number.

115331813 is a deficient number, since it is larger than the sum of its proper divisors (1).

115331813 is an equidigital number, since it uses as much as digits as its factorization.

115331813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 115331813 is about 10739.2650120946. The cubic root of 115331813 is about 486.7616706898.

It can be divided in two parts, 11533181 and 3, that multiplied together give a palindrome (34599543).

The spelling of 115331813 in words is "one hundred fifteen million, three hundred thirty-one thousand, eight hundred thirteen".