915013231 has 8 divisors (see below), whose sum is σ = 1005379200. Its totient is φ = 825844440.

The previous prime is 915013223. The next prime is 915013243. The reversal of 915013231 is 132310519.

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 915013231 - 2³ = 915013223 is a prime.

It is a super-2 number, since 2×915013231² = 1674498425810118722, 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 = 915013196 and 915013205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (915013201) 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, 297691 + ... + 300748.

It is an arithmetic number, because the mean of its divisors is an integer number (125672400).

Almost surely, 2^915013231 is an apocalyptic number.

915013231 is a deficient number, since it is larger than the sum of its proper divisors (90365969).

915013231 is a wasteful number, since it uses less digits than its factorization.

915013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598589.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 915013231 is about 30249.1856254016. The cubic root of 915013231 is about 970.8283677364.

The spelling of 915013231 in words is "nine hundred fifteen million, thirteen thousand, two hundred thirty-one".