325315531 has 4 divisors (see below), whose sum is σ = 325377000. Its totient is φ = 325254064.

The previous prime is 325315493. The next prime is 325315547. The reversal of 325315531 is 135513523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135513523 = 353 ⋅383891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325315531 is a prime.

It is a super-2 number, since 2×325315531² = 211660389419623922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 325315531.

It is not an unprimeable number, because it can be changed into a prime (325315831) 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, 21961 + ... + 33658.

It is an arithmetic number, because the mean of its divisors is an integer number (81344250).

Almost surely, 2^325315531 is an apocalyptic number.

325315531 is a deficient number, since it is larger than the sum of its proper divisors (61469).

325315531 is an equidigital number, since it uses as much as digits as its factorization.

325315531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61468.

The product of its digits is 6750, while the sum is 28.

The square root of 325315531 is about 18036.5055096601. The cubic root of 325315531 is about 687.7568625209.

The spelling of 325315531 in words is "three hundred twenty-five million, three hundred fifteen thousand, five hundred thirty-one".