631462863133 has 2 divisors, whose sum is σ = 631462863134. Its totient is φ = 631462863132.

The previous prime is 631462863131. The next prime is 631462863179. The reversal of 631462863133 is 331368264136.

It is a happy number.

It is an a-pointer prime, because the next prime (631462863179) can be obtained adding 631462863133 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599537392804 + 31925470329 = 774298^2 + 178677^2 .

It is a cyclic number.

It is not a de Polignac number, because 631462863133 - 2¹ = 631462863131 is a prime.

It is a super-2 number, since 2×631462863133² (a number of 24 digits) contains 22 as substring.

Together with 631462863131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631462863131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315731431566 + 315731431567.

It is an arithmetic number, because the mean of its divisors is an integer number (315731431567).

Almost surely, 2^631462863133 is an apocalyptic number.

It is an amenable number.

631462863133 is a deficient number, since it is larger than the sum of its proper divisors (1).

631462863133 is an equidigital number, since it uses as much as digits as its factorization.

631462863133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 46.

The spelling of 631462863133 in words is "six hundred thirty-one billion, four hundred sixty-two million, eight hundred sixty-three thousand, one hundred thirty-three".