631427 has 8 divisors (see below), whose sum is σ = 672000. Its totient is φ = 591624.

The previous prime is 631409. The next prime is 631429. The reversal of 631427 is 724136.

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

It is a cyclic number.

It is not a de Polignac number, because 631427 - 2⁸ = 631171 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 631427.

It is not an unprimeable number, because it can be changed into a prime (631429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3074 + ... + 3272.

It is an arithmetic number, because the mean of its divisors is an integer number (84000).

2⁶³¹⁴²⁷ is an apocalyptic number.

631427 is a deficient number, since it is larger than the sum of its proper divisors (40573).

631427 is a wasteful number, since it uses less digits than its factorization.

631427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

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

The square root of 631427 is about 794.6238103656. The cubic root of 631427 is about 85.7908655555.

The spelling of 631427 in words is "six hundred thirty-one thousand, four hundred twenty-seven".