631883431 has 8 divisors (see below), whose sum is σ = 648975600. Its totient is φ = 614871360.

The previous prime is 631883423. The next prime is 631883453. The reversal of 631883431 is 134388136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 631883431 - 2³ = 631883423 is a prime.

It is a super-4 number, since 4×631883431⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631883491) 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, 3861 + ... + 35758.

It is an arithmetic number, because the mean of its divisors is an integer number (81121950).

Almost surely, 2^631883431 is an apocalyptic number.

631883431 is a deficient number, since it is larger than the sum of its proper divisors (17092169).

631883431 is a wasteful number, since it uses less digits than its factorization.

631883431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40049.

The product of its digits is 41472, while the sum is 37.

The square root of 631883431 is about 25137.2916401111. The cubic root of 631883431 is about 858.1153206655.

The spelling of 631883431 in words is "six hundred thirty-one million, eight hundred eighty-three thousand, four hundred thirty-one".