2316531 has 8 divisors (see below), whose sum is σ = 3529984. Its totient is φ = 1323720.

The previous prime is 2316529. The next prime is 2316553. The reversal of 2316531 is 1356132.

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

It is not a de Polignac number, because 2316531 - 2¹ = 2316529 is a prime.

It is a super-2 number, since 2×2316531² = 10732631747922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 110311 = 2316531 / (2 + 3 + 1 + 6 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2316498 and 2316507.

It is not an unprimeable number, because it can be changed into a prime (2316511) 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, 55135 + ... + 55176.

It is an arithmetic number, because the mean of its divisors is an integer number (441248).

2^2316531 is an apocalyptic number.

2316531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2316531 is a deficient number, since it is larger than the sum of its proper divisors (1213453).

2316531 is a wasteful number, since it uses less digits than its factorization.

2316531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110321.

The product of its digits is 540, while the sum is 21.

The square root of 2316531 is about 1522.0154401319. The cubic root of 2316531 is about 132.3161042117.

The spelling of 2316531 in words is "two million, three hundred sixteen thousand, five hundred thirty-one".