231869 has 8 divisors (see below), whose sum is σ = 256608. Its totient is φ = 207760.

The previous prime is 231859. The next prime is 231871. The reversal of 231869 is 968132.

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 231869 - 2⁸ = 231613 is a prime.

It is a super-2 number, since 2×231869² = 107526466322, which contains 22 as substring.

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 (231809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1079 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (32076).

2²³¹⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

231869 is a deficient number, since it is larger than the sum of its proper divisors (24739).

231869 is a wasteful number, since it uses less digits than its factorization.

231869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its digits is 2592, while the sum is 29.

The square root of 231869 is about 481.5277769766. The cubic root of 231869 is about 61.4347690056.

The spelling of 231869 in words is "two hundred thirty-one thousand, eight hundred sixty-nine".