631624311477 has 6 divisors (see below), whose sum is σ = 912346227702. Its totient is φ = 421082874312.

The previous prime is 631624311457. The next prime is 631624311481. The reversal of 631624311477 is 774113426136.

631624311477 is a `hidden beast` number, since 6 + 3 + 1 + 624 + 3 + 1 + 14 + 7 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 520419402801 + 111204908676 = 721401^2 + 333474^2 .

It is not a de Polignac number, because 631624311477 - 2⁷ = 631624311349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631624311457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35090239518 + ... + 35090239535.

It is an arithmetic number, because the mean of its divisors is an integer number (152057704617).

Almost surely, 2^631624311477 is an apocalyptic number.

It is an amenable number.

631624311477 is a deficient number, since it is larger than the sum of its proper divisors (280721916225).

631624311477 is a wasteful number, since it uses less digits than its factorization.

631624311477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70180479059 (or 70180479056 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The spelling of 631624311477 in words is "six hundred thirty-one billion, six hundred twenty-four million, three hundred eleven thousand, four hundred seventy-seven".