631480 has 16 divisors (see below), whose sum is σ = 1420920. Its totient is φ = 252576.

The previous prime is 631471. The next prime is 631483. The reversal of 631480 is 84136.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7854 + ... + 7933.

2⁶³¹⁴⁸⁰ is an apocalyptic number.

It is an amenable number.

631480 is an abundant number, since it is smaller than the sum of its proper divisors (789440).

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

631480 is a wasteful number, since it uses less digits than its factorization.

631480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15798 (or 15794 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 631480 is about 794.6571587798. The cubic root of 631480 is about 85.7932658270.

It can be divided in two parts, 631 and 480, that added together give a palindrome (1111).

The spelling of 631480 in words is "six hundred thirty-one thousand, four hundred eighty".