631429 has 2 divisors, whose sum is σ = 631430. Its totient is φ = 631428.

The previous prime is 631409. The next prime is 631453. The reversal of 631429 is 924136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540225 + 91204 = 735^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 631429 - 2¹¹ = 629381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315714 + 315715.

It is an arithmetic number, because the mean of its divisors is an integer number (315715).

2⁶³¹⁴²⁹ is an apocalyptic number.

It is an amenable number.

631429 is a deficient number, since it is larger than the sum of its proper divisors (1).

631429 is an equidigital number, since it uses as much as digits as its factorization.

631429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 631429 is about 794.6250688218. The cubic root of 631429 is about 85.7909561342.

The spelling of 631429 in words is "six hundred thirty-one thousand, four hundred twenty-nine".