634267295231 has 2 divisors, whose sum is σ = 634267295232. Its totient is φ = 634267295230.

The previous prime is 634267295227. The next prime is 634267295251. The reversal of 634267295231 is 132592762436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634267295231 - 2² = 634267295227 is a prime.

It is a super-2 number, since 2×634267295231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 634267295231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634267295251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317133647615 + 317133647616.

It is an arithmetic number, because the mean of its divisors is an integer number (317133647616).

Almost surely, 2^634267295231 is an apocalyptic number.

634267295231 is a deficient number, since it is larger than the sum of its proper divisors (1).

634267295231 is an equidigital number, since it uses as much as digits as its factorization.

634267295231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 50.

Adding to 634267295231 its sum of digits (50), we get a square (634267295281 = 796409²).

The spelling of 634267295231 in words is "six hundred thirty-four billion, two hundred sixty-seven million, two hundred ninety-five thousand, two hundred thirty-one".