321112587431 has 2 divisors, whose sum is σ = 321112587432. Its totient is φ = 321112587430.

The previous prime is 321112587379. The next prime is 321112587503. The reversal of 321112587431 is 134785211123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321112587431 - 2²² = 321108393127 is a prime.

It is a super-2 number, since 2×321112587431² (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 (321112517431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160556293715 + 160556293716.

It is an arithmetic number, because the mean of its divisors is an integer number (160556293716).

Almost surely, 2^321112587431 is an apocalyptic number.

321112587431 is a deficient number, since it is larger than the sum of its proper divisors (1).

321112587431 is an equidigital number, since it uses as much as digits as its factorization.

321112587431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

Adding to 321112587431 its reverse (134785211123), we get a palindrome (455897798554).

The spelling of 321112587431 in words is "three hundred twenty-one billion, one hundred twelve million, five hundred eighty-seven thousand, four hundred thirty-one".