115223131 has 4 divisors (see below), whose sum is σ = 116846064. Its totient is φ = 113600200.

The previous prime is 115223111. The next prime is 115223149. The reversal of 115223131 is 131322511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131322511 = 929 ⋅141359.

It is a cyclic number.

It is not a de Polignac number, because 115223131 - 2⁹ = 115222619 is a prime.

It is a super-2 number, since 2×115223131² = 26552739834886322, 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 = 115223099 and 115223108.

It is not an unprimeable number, because it can be changed into a prime (115223111) 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, 811360 + ... + 811501.

It is an arithmetic number, because the mean of its divisors is an integer number (29211516).

Almost surely, 2^115223131 is an apocalyptic number.

115223131 is a deficient number, since it is larger than the sum of its proper divisors (1622933).

115223131 is an equidigital number, since it uses as much as digits as its factorization.

115223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622932.

The product of its digits is 180, while the sum is 19.

The square root of 115223131 is about 10734.2037897554. The cubic root of 115223131 is about 486.6087239975.

Adding to 115223131 its reverse (131322511), we get a palindrome (246545642).

The spelling of 115223131 in words is "one hundred fifteen million, two hundred twenty-three thousand, one hundred thirty-one".