631743342120 has 384 divisors, whose sum is σ = 2346758144640. Its totient is φ = 151568547840.

The previous prime is 631743342119. The next prime is 631743342149. The reversal of 631743342120 is 21243347136.

631743342120 is a `hidden beast` number, since 6 + 3 + 1 + 7 + 433 + 4 + 212 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10340784 + ... + 10401696.

It is an arithmetic number, because the mean of its divisors is an integer number (6111349335).

Almost surely, 2^631743342120 is an apocalyptic number.

631743342120 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 631743342120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173379072320).

631743342120 is an abundant number, since it is smaller than the sum of its proper divisors (1715014802520).

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

631743342120 is a wasteful number, since it uses less digits than its factorization.

631743342120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61047 (or 61031 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

Adding to 631743342120 its reverse (21243347136), we get a palindrome (652986689256).

The spelling of 631743342120 in words is "six hundred thirty-one billion, seven hundred forty-three million, three hundred forty-two thousand, one hundred twenty".