52031331 has 18 divisors (see below), whose sum is σ = 82611620. Its totient is φ = 31533480.

The previous prime is 52031311. The next prime is 52031341. The reversal of 52031331 is 13313025.

It is not a de Polignac number, because 52031331 - 2²¹ = 49934179 is a prime.

It is a super-2 number, since 2×52031331² = 5414518811263122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52031311) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22801 + ... + 24978.

Almost surely, 2^52031331 is an apocalyptic number.

52031331 is a deficient number, since it is larger than the sum of its proper divisors (30580289).

52031331 is a wasteful number, since it uses less digits than its factorization.

52031331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47807 (or 47793 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 52031331 is about 7213.2746377772. The cubic root of 52031331 is about 373.3260642894.

Adding to 52031331 its reverse (13313025), we get a palindrome (65344356).

The spelling of 52031331 in words is "fifty-two million, thirty-one thousand, three hundred thirty-one".