2915231 has 4 divisors (see below), whose sum is σ = 3180264. Its totient is φ = 2650200.

The previous prime is 2915219. The next prime is 2915243. The reversal of 2915231 is 1325192.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2915219) and next prime (2915243).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2915231 is a prime.

It is a super-2 number, since 2×2915231² = 16997143566722, 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 = 2915197 and 2915206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2915201) 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, 132500 + ... + 132521.

It is an arithmetic number, because the mean of its divisors is an integer number (795066).

2^2915231 is an apocalyptic number.

2915231 is a deficient number, since it is larger than the sum of its proper divisors (265033).

2915231 is a wasteful number, since it uses less digits than its factorization.

2915231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265032.

The product of its digits is 540, while the sum is 23.

The square root of 2915231 is about 1707.4047557624. The cubic root of 2915231 is about 142.8535348136.

The spelling of 2915231 in words is "two million, nine hundred fifteen thousand, two hundred thirty-one".