629431 has 4 divisors (see below), whose sum is σ = 686664. Its totient is φ = 572200.

The previous prime is 629429. The next prime is 629449. The reversal of 629431 is 134926.

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

It is a cyclic number.

It is not a de Polignac number, because 629431 - 2¹ = 629429 is a prime.

It is a super-2 number, since 2×629431² = 792366767522, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 629396 and 629405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629401) 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, 28600 + ... + 28621.

It is an arithmetic number, because the mean of its divisors is an integer number (171666).

2⁶²⁹⁴³¹ is an apocalyptic number.

629431 is a deficient number, since it is larger than the sum of its proper divisors (57233).

629431 is a wasteful number, since it uses less digits than its factorization.

629431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57232.

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

The square root of 629431 is about 793.3668760416. The cubic root of 629431 is about 85.7003724772.

The spelling of 629431 in words is "six hundred twenty-nine thousand, four hundred thirty-one".