631057830 has 96 divisors (see below), whose sum is σ = 1726583040. Its totient is φ = 147139200.

The previous prime is 631057807. The next prime is 631057873. The reversal of 631057830 is 38750136.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 631057791 and 631057800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93055 + ... + 99605.

It is an arithmetic number, because the mean of its divisors is an integer number (17985240).

Almost surely, 2^631057830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631057830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863291520).

631057830 is an abundant number, since it is smaller than the sum of its proper divisors (1095525210).

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

631057830 is a wasteful number, since it uses less digits than its factorization.

631057830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6606 (or 6593 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 631057830 is about 25120.8644357634. The cubic root of 631057830 is about 857.7414280518.

The spelling of 631057830 in words is "six hundred thirty-one million, fifty-seven thousand, eight hundred thirty".