631544243316 has 96 divisors (see below), whose sum is σ = 1687169261568. Its totient is φ = 180114641280.

The previous prime is 631544243293. The next prime is 631544243339. The reversal of 631544243316 is 613342445136.

It is an interprime number because it is at equal distance from previous prime (631544243293) and next prime (631544243339).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130725021 + ... + 130729851.

It is an arithmetic number, because the mean of its divisors is an integer number (17574679808).

Almost surely, 2^631544243316 is an apocalyptic number.

It is an amenable number.

631544243316 is an abundant number, since it is smaller than the sum of its proper divisors (1055625018252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631544243316 is a wasteful number, since it uses less digits than its factorization.

631544243316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341 (or 7339 counting only the distinct ones).

The product of its digits is 622080, while the sum is 42.

The spelling of 631544243316 in words is "six hundred thirty-one billion, five hundred forty-four million, two hundred forty-three thousand, three hundred sixteen".