115431 has 8 divisors (see below), whose sum is σ = 155760. Its totient is φ = 76032.

The previous prime is 115429. The next prime is 115459. The reversal of 115431 is 134511.

115431 is nontrivially palindromic in base 13.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115431 - 2¹ = 115429 is a prime.

It is a super-2 number, since 2×115431² = 26648631522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151 + ... + 503.

It is an arithmetic number, because the mean of its divisors is an integer number (19470).

2¹¹⁵⁴³¹ is an apocalyptic number.

115431 is a deficient number, since it is larger than the sum of its proper divisors (40329).

115431 is a wasteful number, since it uses less digits than its factorization.

115431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465.

The product of its digits is 60, while the sum is 15.

The square root of 115431 is about 339.7513796881. The cubic root of 115431 is about 48.6901171361.

Adding to 115431 its reverse (134511), we get a palindrome (249942).

The spelling of 115431 in words is "one hundred fifteen thousand, four hundred thirty-one".