252320642531 has 2 divisors, whose sum is σ = 252320642532. Its totient is φ = 252320642530.

The previous prime is 252320642479. The next prime is 252320642569. The reversal of 252320642531 is 135246023252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252320642531 - 2¹⁸ = 252320380387 is a prime.

It is a super-2 number, since 2×252320642531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252320642491 and 252320642500.

It is not a weakly prime, because it can be changed into another prime (252320642591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126160321265 + 126160321266.

It is an arithmetic number, because the mean of its divisors is an integer number (126160321266).

Almost surely, 2^252320642531 is an apocalyptic number.

252320642531 is a deficient number, since it is larger than the sum of its proper divisors (1).

252320642531 is an equidigital number, since it uses as much as digits as its factorization.

252320642531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 252320642531 its reverse (135246023252), we get a palindrome (387566665783).

The spelling of 252320642531 in words is "two hundred fifty-two billion, three hundred twenty million, six hundred forty-two thousand, five hundred thirty-one".