631742 has 8 divisors (see below), whose sum is σ = 960816. Its totient is φ = 311472.

The previous prime is 631739. The next prime is 631751. The reversal of 631742 is 247136.

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

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, 2018 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (120102).

2⁶³¹⁷⁴² is an apocalyptic number.

631742 is a deficient number, since it is larger than the sum of its proper divisors (329074).

631742 is a wasteful number, since it uses less digits than its factorization.

631742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402.

The product of its digits is 1008, while the sum is 23.

The square root of 631742 is about 794.8219926499. The cubic root of 631742 is about 85.8051293474.

Adding to 631742 its reverse (247136), we get a palindrome (878878).

It can be divided in two parts, 63 and 1742, that multiplied together give a triangular number (109746 = T₄₆₈).

The spelling of 631742 in words is "six hundred thirty-one thousand, seven hundred forty-two".