631090 has 16 divisors (see below), whose sum is σ = 1145088. Its totient is φ = 250416.

The previous prime is 631061. The next prime is 631121. The reversal of 631090 is 90136.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2089 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (71568).

2⁶³¹⁰⁹⁰ is an apocalyptic number.

631090 is a deficient number, since it is larger than the sum of its proper divisors (513998).

631090 is a wasteful number, since it uses less digits than its factorization.

631090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 631090 is about 794.4117320382. The cubic root of 631090 is about 85.7756003088.

It can be divided in two parts, 6310 and 90, that added together give a square (6400 = 80²).

The spelling of 631090 in words is "six hundred thirty-one thousand, ninety".