447308631 has 24 divisors (see below), whose sum is σ = 805544064. Its totient is φ = 232367760.

The previous prime is 447308611. The next prime is 447308639. The reversal of 447308631 is 136803744.

It is not a de Polignac number, because 447308631 - 2¹¹ = 447306583 is a prime.

It is a super-2 number, since 2×447308631² = 400170022734188322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447308639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322041 + ... + 323426.

It is an arithmetic number, because the mean of its divisors is an integer number (33564336).

Almost surely, 2^447308631 is an apocalyptic number.

447308631 is a deficient number, since it is larger than the sum of its proper divisors (358235433).

447308631 is a wasteful number, since it uses less digits than its factorization.

447308631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645491 (or 645488 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 447308631 is about 21149.6721251182. The cubic root of 447308631 is about 764.7786569681.

It can be divided in two parts, 44730 and 8631, that added together give a square (53361 = 231²).

The spelling of 447308631 in words is "four hundred forty-seven million, three hundred eight thousand, six hundred thirty-one".