631442 has 32 divisors (see below), whose sum is σ = 1181952. Its totient is φ = 247104.

The previous prime is 631429. The next prime is 631453. The reversal of 631442 is 244136.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 631442.

It is an unprimeable number.

631442 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11888 + ... + 11940.

It is an arithmetic number, because the mean of its divisors is an integer number (36936).

2⁶³¹⁴⁴² is an apocalyptic number.

631442 is a deficient number, since it is larger than the sum of its proper divisors (550510).

631442 is a wasteful number, since it uses less digits than its factorization.

631442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122.

The product of its digits is 576, while the sum is 20.

The square root of 631442 is about 794.6332487381. The cubic root of 631442 is about 85.7915448912.

Adding to 631442 its reverse (244136), we get a palindrome (875578).

The spelling of 631442 in words is "six hundred thirty-one thousand, four hundred forty-two".