115451431 has 4 divisors (see below), whose sum is σ = 118136392. Its totient is φ = 112766472.

The previous prime is 115451389. The next prime is 115451443. The reversal of 115451431 is 134154511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115451431 - 2⁹ = 115450919 is a prime.

It is a super-2 number, since 2×115451431² = 26658065839895522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115451396 and 115451405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115451491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1342416 + ... + 1342501.

It is an arithmetic number, because the mean of its divisors is an integer number (29534098).

Almost surely, 2^115451431 is an apocalyptic number.

115451431 is a deficient number, since it is larger than the sum of its proper divisors (2684961).

115451431 is an equidigital number, since it uses as much as digits as its factorization.

115451431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684960.

The product of its digits is 1200, while the sum is 25.

The square root of 115451431 is about 10744.8327581215. The cubic root of 115451431 is about 486.9298964314.

The spelling of 115451431 in words is "one hundred fifteen million, four hundred fifty-one thousand, four hundred thirty-one".