231629 has 8 divisors (see below), whose sum is σ = 248640. Its totient is φ = 215136.

The previous prime is 231613. The next prime is 231631. The reversal of 231629 is 926132.

231629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231629 - 2⁴ = 231613 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231529) 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, 1304 + ... + 1470.

It is an arithmetic number, because the mean of its divisors is an integer number (31080).

2²³¹⁶²⁹ is an apocalyptic number.

It is an amenable number.

231629 is a deficient number, since it is larger than the sum of its proper divisors (17011).

231629 is a wasteful number, since it uses less digits than its factorization.

231629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259.

The product of its digits is 648, while the sum is 23.

The square root of 231629 is about 481.2785056493. The cubic root of 231629 is about 61.4135653165.

The spelling of 231629 in words is "two hundred thirty-one thousand, six hundred twenty-nine".