631130345535360 has 256 divisors, whose sum is σ = 2194727042718720. Its totient is φ = 152993299046400.

The previous prime is 631130345535289. The next prime is 631130345535409. The reversal of 631130345535360 is 63535543031136.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 408386505 + ... + 409929015.

It is an arithmetic number, because the mean of its divisors is an integer number (8573152510620).

Almost surely, 2^{631130345535360} is an apocalyptic number.

631130345535360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631130345535360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1097363521359360).

631130345535360 is an abundant number, since it is smaller than the sum of its proper divisors (1563596697183360).

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

631130345535360 is a wasteful number, since it uses less digits than its factorization.

631130345535360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561917 (or 1561905 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 48.

Adding to 631130345535360 its reverse (63535543031136), we get a palindrome (694665888566496).

The spelling of 631130345535360 in words is "six hundred thirty-one trillion, one hundred thirty billion, three hundred forty-five million, five hundred thirty-five thousand, three hundred sixty".