631141 has 4 divisors (see below), whose sum is σ = 721312. Its totient is φ = 540972.

The previous prime is 631139. The next prime is 631151. The reversal of 631141 is 141136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 631141 - 2¹ = 631139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631121) 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, 45075 + ... + 45088.

It is an arithmetic number, because the mean of its divisors is an integer number (180328).

2⁶³¹¹⁴¹ is an apocalyptic number.

It is an amenable number.

631141 is a deficient number, since it is larger than the sum of its proper divisors (90171).

631141 is an equidigital number, since it uses as much as digits as its factorization.

631141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90170.

The product of its digits is 72, while the sum is 16.

The square root of 631141 is about 794.4438306136. The cubic root of 631141 is about 85.7779108286. Note that the first 3 decimals are identical.

Adding to 631141 its reverse (141136), we get a palindrome (772277).

The spelling of 631141 in words is "six hundred thirty-one thousand, one hundred forty-one".