253311331 has 16 divisors (see below), whose sum is σ = 318136000. Its totient is φ = 200418624.

The previous prime is 253311301. The next prime is 253311337. The reversal of 253311331 is 133113352.

It is a happy number.

It is not a de Polignac number, because 253311331 - 2⁹ = 253310819 is a prime.

It is a super-2 number, since 2×253311331² = 128333260825983122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253311337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23946 + ... + 32863.

It is an arithmetic number, because the mean of its divisors is an integer number (19883500).

Almost surely, 2^253311331 is an apocalyptic number.

253311331 is a deficient number, since it is larger than the sum of its proper divisors (64824669).

253311331 is an equidigital number, since it uses as much as digits as its factorization.

253311331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56843 (or 56829 counting only the distinct ones).

The product of its digits is 810, while the sum is 22.

The square root of 253311331 is about 15915.7573178281. The cubic root of 253311331 is about 632.7296783396.

Adding to 253311331 its reverse (133113352), we get a palindrome (386424683).

It can be divided in two parts, 25331 and 1331, that added together give a palindrome (26662).

The spelling of 253311331 in words is "two hundred fifty-three million, three hundred eleven thousand, three hundred thirty-one".