252320331 has 4 divisors (see below), whose sum is σ = 336427112. Its totient is φ = 168213552.

The previous prime is 252320317. The next prime is 252320347. The reversal of 252320331 is 133023252.

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

It is not a de Polignac number, because 252320331 - 2⁶ = 252320267 is a prime.

It is a super-2 number, since 2×252320331² = 127331098871899122, 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 = 252320298 and 252320307.

It is not an unprimeable number, because it can be changed into a prime (252320311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42053386 + ... + 42053391.

It is an arithmetic number, because the mean of its divisors is an integer number (84106778).

Almost surely, 2^252320331 is an apocalyptic number.

252320331 is a deficient number, since it is larger than the sum of its proper divisors (84106781).

252320331 is an equidigital number, since it uses as much as digits as its factorization.

252320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84106780.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 252320331 is about 15884.5941402354. The cubic root of 252320331 is about 631.9034821295.

Adding to 252320331 its reverse (133023252), we get a palindrome (385343583).

The spelling of 252320331 in words is "two hundred fifty-two million, three hundred twenty thousand, three hundred thirty-one".