325312731 has 12 divisors (see below), whose sum is σ = 497537352. Its totient is φ = 204117696.

The previous prime is 325312727. The next prime is 325312751. The reversal of 325312731 is 137213523.

It is not a de Polignac number, because 325312731 - 2² = 325312727 is a prime.

It is a super-2 number, since 2×325312731² = 211656745901356722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 325312695 and 325312704.

It is not an unprimeable number, because it can be changed into a prime (325312751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062961 + ... + 1063266.

It is an arithmetic number, because the mean of its divisors is an integer number (41461446).

Almost surely, 2^325312731 is an apocalyptic number.

325312731 is a deficient number, since it is larger than the sum of its proper divisors (172224621).

325312731 is a wasteful number, since it uses less digits than its factorization.

325312731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126250 (or 2126247 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 325312731 is about 18036.4278891359. The cubic root of 325312731 is about 687.7548893343.

The spelling of 325312731 in words is "three hundred twenty-five million, three hundred twelve thousand, seven hundred thirty-one".