115612531 has 8 divisors (see below), whose sum is σ = 122832720. Its totient is φ = 108607968.

The previous prime is 115612517. The next prime is 115612543. The reversal of 115612531 is 135216511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 115612531 - 2⁵ = 115612499 is a prime.

It is a super-2 number, since 2×115612531² = 26732514648451922, 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 = 115612496 and 115612505.

It is not an unprimeable number, because it can be changed into a prime (115612501) 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, 52801 + ... + 54946.

It is an arithmetic number, because the mean of its divisors is an integer number (15354090).

Almost surely, 2^115612531 is an apocalyptic number.

115612531 is a deficient number, since it is larger than the sum of its proper divisors (7220189).

115612531 is a wasteful number, since it uses less digits than its factorization.

115612531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107813.

The product of its digits is 900, while the sum is 25.

The square root of 115612531 is about 10752.3267714481. The cubic root of 115612531 is about 487.1562771903.

The spelling of 115612531 in words is "one hundred fifteen million, six hundred twelve thousand, five hundred thirty-one".