252231131 has 2 divisors, whose sum is σ = 252231132. Its totient is φ = 252231130.

The previous prime is 252231127. The next prime is 252231151. The reversal of 252231131 is 131132252.

It is an a-pointer prime, because the next prime (252231151) can be obtained adding 252231131 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252231131 - 2² = 252231127 is a prime.

It is a super-2 number, since 2×252231131² = 127241086891078322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252231151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126115565 + 126115566.

It is an arithmetic number, because the mean of its divisors is an integer number (126115566).

Almost surely, 2^252231131 is an apocalyptic number.

252231131 is a deficient number, since it is larger than the sum of its proper divisors (1).

252231131 is an equidigital number, since it uses as much as digits as its factorization.

252231131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 252231131 is about 15881.7861401040. The cubic root of 252231131 is about 631.8290100834.

Adding to 252231131 its reverse (131132252), we get a palindrome (383363383).

The spelling of 252231131 in words is "two hundred fifty-two million, two hundred thirty-one thousand, one hundred thirty-one".