232311201131 has 2 divisors, whose sum is σ = 232311201132. Its totient is φ = 232311201130.

The previous prime is 232311201127. The next prime is 232311201169. The reversal of 232311201131 is 131102113232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 232311201131 - 2² = 232311201127 is a prime.

It is a super-2 number, since 2×232311201131² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (232311201431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116155600565 + 116155600566.

It is an arithmetic number, because the mean of its divisors is an integer number (116155600566).

Almost surely, 2^232311201131 is an apocalyptic number.

232311201131 is a deficient number, since it is larger than the sum of its proper divisors (1).

232311201131 is an equidigital number, since it uses as much as digits as its factorization.

232311201131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 232311201131 its reverse (131102113232), we get a palindrome (363413314363).

The spelling of 232311201131 in words is "two hundred thirty-two billion, three hundred eleven million, two hundred one thousand, one hundred thirty-one".