231322065031 has 2 divisors, whose sum is σ = 231322065032. Its totient is φ = 231322065030.

The previous prime is 231322065019. The next prime is 231322065043. The reversal of 231322065031 is 130560223132.

It is a balanced prime because it is at equal distance from previous prime (231322065019) and next prime (231322065043).

It is a cyclic number.

It is not a de Polignac number, because 231322065031 - 2²³ = 231313676423 is a prime.

It is a super-2 number, since 2×231322065031² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231322065631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661032515 + 115661032516.

It is an arithmetic number, because the mean of its divisors is an integer number (115661032516).

Almost surely, 2^231322065031 is an apocalyptic number.

231322065031 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322065031 is an equidigital number, since it uses as much as digits as its factorization.

231322065031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 231322065031 its reverse (130560223132), we get a palindrome (361882288163).

The spelling of 231322065031 in words is "two hundred thirty-one billion, three hundred twenty-two million, sixty-five thousand, thirty-one".