115031 has 4 divisors (see below), whose sum is σ = 131472. Its totient is φ = 98592.

The previous prime is 115021. The next prime is 115057. The reversal of 115031 is 130511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130511 = 19 ⋅6869.

It is a cyclic number.

It is not a de Polignac number, because 115031 - 2⁶ = 114967 is a prime.

It is a super-2 number, since 2×115031² = 26464261922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115001) 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, 8210 + ... + 8223.

It is an arithmetic number, because the mean of its divisors is an integer number (32868).

2¹¹⁵⁰³¹ is an apocalyptic number.

115031 is a deficient number, since it is larger than the sum of its proper divisors (16441).

115031 is an equidigital number, since it uses as much as digits as its factorization.

115031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16440.

The product of its (nonzero) digits is 15, while the sum is 11.

The square root of 115031 is about 339.1622030828. The cubic root of 115031 is about 48.6338105203.

Adding to 115031 its reverse (130511), we get a palindrome (245542).

The spelling of 115031 in words is "one hundred fifteen thousand, thirty-one".