631357428590 has 64 divisors (see below), whose sum is σ = 1389369469824. Its totient is φ = 201631776768.

The previous prime is 631357428557. The next prime is 631357428629. The reversal of 631357428590 is 95824753136.

It is a happy number.

It is a super-2 number, since 2×631357428590² (a number of 24 digits) contains 22 as substring.

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, 2619377 + ... + 2850236.

It is an arithmetic number, because the mean of its divisors is an integer number (21708897966).

It is a 1-persistent number, because it is pandigital, but 2⋅631357428590 = 1262714857180 is not.

Almost surely, 2^631357428590 is an apocalyptic number.

631357428590 is an abundant number, since it is smaller than the sum of its proper divisors (758012041234).

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

631357428590 is a wasteful number, since it uses less digits than its factorization.

631357428590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469741.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 631357428590 in words is "six hundred thirty-one billion, three hundred fifty-seven million, four hundred twenty-eight thousand, five hundred ninety".