231893839 has 4 divisors (see below), whose sum is σ = 233562280. Its totient is φ = 230225400.

The previous prime is 231893807. The next prime is 231893863. The reversal of 231893839 is 938398132.

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 231893839 - 2⁵ = 231893807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231893869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834012 + ... + 834289.

It is an arithmetic number, because the mean of its divisors is an integer number (58390570).

Almost surely, 2^231893839 is an apocalyptic number.

231893839 is a deficient number, since it is larger than the sum of its proper divisors (1668441).

231893839 is a wasteful number, since it uses less digits than its factorization.

231893839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668440.

The product of its digits is 279936, while the sum is 46.

The square root of 231893839 is about 15228.0609074169. The cubic root of 231893839 is about 614.3696266347.

It can be divided in two parts, 23189 and 3839, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 231893839 in words is "two hundred thirty-one million, eight hundred ninety-three thousand, eight hundred thirty-nine".