631055 has 4 divisors (see below), whose sum is σ = 757272. Its totient is φ = 504840.

The previous prime is 631039. The next prime is 631061. The reversal of 631055 is 550136.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 631055 - 2⁴ = 631039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63101 + ... + 63110.

It is an arithmetic number, because the mean of its divisors is an integer number (189318).

2⁶³¹⁰⁵⁵ is an apocalyptic number.

631055 is a deficient number, since it is larger than the sum of its proper divisors (126217).

631055 is a wasteful number, since it uses less digits than its factorization.

631055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126216.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 631055 is about 794.3897028537. The cubic root of 631055 is about 85.7740145860.

The spelling of 631055 in words is "six hundred thirty-one thousand, fifty-five".