2531315 has 4 divisors (see below), whose sum is σ = 3037584. Its totient is φ = 2025048.

The previous prime is 2531293. The next prime is 2531369. The reversal of 2531315 is 5131352.

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

It is a cyclic number.

It is not a de Polignac number, because 2531315 - 2¹² = 2527219 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253127 + ... + 253136.

It is an arithmetic number, because the mean of its divisors is an integer number (759396).

2^2531315 is an apocalyptic number.

2531315 is a deficient number, since it is larger than the sum of its proper divisors (506269).

2531315 is an equidigital number, since it uses as much as digits as its factorization.

2531315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506268.

The product of its digits is 450, while the sum is 20.

The square root of 2531315 is about 1591.0106850678. The cubic root of 2531315 is about 136.2852109990.

Adding to 2531315 its reverse (5131352), we get a palindrome (7662667).

The spelling of 2531315 in words is "two million, five hundred thirty-one thousand, three hundred fifteen".