631734508831 has 2 divisors, whose sum is σ = 631734508832. Its totient is φ = 631734508830.

The previous prime is 631734508763. The next prime is 631734508843. The reversal of 631734508831 is 138805437136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631734508831 - 2¹¹ = 631734506783 is a prime.

It is a super-2 number, since 2×631734508831² (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 (631734508231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315867254415 + 315867254416.

It is an arithmetic number, because the mean of its divisors is an integer number (315867254416).

Almost surely, 2^631734508831 is an apocalyptic number.

631734508831 is a deficient number, since it is larger than the sum of its proper divisors (1).

631734508831 is an equidigital number, since it uses as much as digits as its factorization.

631734508831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 631734508831 in words is "six hundred thirty-one billion, seven hundred thirty-four million, five hundred eight thousand, eight hundred thirty-one".