252240340231 has 16 divisors (see below), whose sum is σ = 277536734208. Its totient is φ = 229233933720.

The previous prime is 252240340223. The next prime is 252240340349. The reversal of 252240340231 is 132043042252.

252240340231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252240340231 - 2³ = 252240340223 is a prime.

It is a super-2 number, since 2×252240340231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252240340231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252240340631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4233610 + ... + 4292776.

It is an arithmetic number, because the mean of its divisors is an integer number (17346045888).

Almost surely, 2^252240340231 is an apocalyptic number.

252240340231 is a deficient number, since it is larger than the sum of its proper divisors (25296393977).

252240340231 is an equidigital number, since it uses as much as digits as its factorization.

252240340231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62403 (or 62381 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 252240340231 its reverse (132043042252), we get a palindrome (384283382483).

The spelling of 252240340231 in words is "two hundred fifty-two billion, two hundred forty million, three hundred forty thousand, two hundred thirty-one".