631104132431 has 2 divisors, whose sum is σ = 631104132432. Its totient is φ = 631104132430.

The previous prime is 631104132413. The next prime is 631104132433. The reversal of 631104132431 is 134231401136.

It is a happy number.

Together with previous prime (631104132413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631104132431 - 2¹⁰ = 631104131407 is a prime.

It is a super-2 number, since 2×631104132431² (a number of 24 digits) contains 22 as substring.

Together with 631104132433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 631104132394 and 631104132403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631104132433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315552066215 + 315552066216.

It is an arithmetic number, because the mean of its divisors is an integer number (315552066216).

Almost surely, 2^631104132431 is an apocalyptic number.

631104132431 is a deficient number, since it is larger than the sum of its proper divisors (1).

631104132431 is an equidigital number, since it uses as much as digits as its factorization.

631104132431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 631104132431 its reverse (134231401136), we get a palindrome (765335533567).

The spelling of 631104132431 in words is "six hundred thirty-one billion, one hundred four million, one hundred thirty-two thousand, four hundred thirty-one".