52331231 has 4 divisors (see below), whose sum is σ = 52849464. Its totient is φ = 51813000.

The previous prime is 52331207. The next prime is 52331249. The reversal of 52331231 is 13213325.

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

It is not a de Polignac number, because 52331231 - 2¹⁰ = 52330207 is a prime.

It is a super-2 number, since 2×52331231² = 5477115475950722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52331261) 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, 258965 + ... + 259166.

It is an arithmetic number, because the mean of its divisors is an integer number (13212366).

Almost surely, 2^52331231 is an apocalyptic number.

52331231 is a deficient number, since it is larger than the sum of its proper divisors (518233).

52331231 is a wasteful number, since it uses less digits than its factorization.

52331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518232.

The product of its digits is 540, while the sum is 20.

The square root of 52331231 is about 7234.0328310010. The cubic root of 52331231 is about 374.0419538855.

Adding to 52331231 its reverse (13213325), we get a palindrome (65544556).

The spelling of 52331231 in words is "fifty-two million, three hundred thirty-one thousand, two hundred thirty-one".