631146444 has 24 divisors (see below), whose sum is σ = 1512478128. Its totient is φ = 204696000.

The previous prime is 631146431. The next prime is 631146449. The reversal of 631146444 is 444641136.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (631146449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710307 + ... + 711194.

It is an arithmetic number, because the mean of its divisors is an integer number (63019922).

Almost surely, 2^631146444 is an apocalyptic number.

It is an amenable number.

631146444 is an abundant number, since it is smaller than the sum of its proper divisors (881331684).

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

631146444 is a wasteful number, since it uses less digits than its factorization.

631146444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421545 (or 1421543 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 631146444 is about 25122.6281268501. The cubic root of 631146444 is about 857.7815745793.

The spelling of 631146444 in words is "six hundred thirty-one million, one hundred forty-six thousand, four hundred forty-four".