115343531 has 2 divisors, whose sum is σ = 115343532. Its totient is φ = 115343530.

The previous prime is 115343519. The next prime is 115343533. The reversal of 115343531 is 135343511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115343531 is a prime.

It is a super-2 number, since 2×115343531² = 26608260287095922, which contains 22 as substring.

Together with 115343533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115343531.

It is not a weakly prime, because it can be changed into another prime (115343533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57671765 + 57671766.

It is an arithmetic number, because the mean of its divisors is an integer number (57671766).

Almost surely, 2^115343531 is an apocalyptic number.

115343531 is a deficient number, since it is larger than the sum of its proper divisors (1).

115343531 is an equidigital number, since it uses as much as digits as its factorization.

115343531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 115343531 is about 10739.8105662996. The cubic root of 115343531 is about 486.7781555316.

The spelling of 115343531 in words is "one hundred fifteen million, three hundred forty-three thousand, five hundred thirty-one".