631379 has 4 divisors (see below), whose sum is σ = 721584. Its totient is φ = 541176.

The previous prime is 631361. The next prime is 631387. The reversal of 631379 is 973136.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631339) 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, 45092 + ... + 45105.

It is an arithmetic number, because the mean of its divisors is an integer number (180396).

2⁶³¹³⁷⁹ is an apocalyptic number.

631379 is a deficient number, since it is larger than the sum of its proper divisors (90205).

631379 is an equidigital number, since it uses as much as digits as its factorization.

631379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90204.

The product of its digits is 3402, while the sum is 29.

The square root of 631379 is about 794.5936068205. The cubic root of 631379 is about 85.7886916088.

The spelling of 631379 in words is "six hundred thirty-one thousand, three hundred seventy-nine".