231641839 has 16 divisors (see below), whose sum is σ = 274700160. Its totient is φ = 192555360.

The previous prime is 231641789. The next prime is 231641849. The reversal of 231641839 is 938146132.

It is a cyclic number.

It is not a de Polignac number, because 231641839 - 2²¹ = 229544687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231641798 and 231641807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231641849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7732 + ... + 22870.

It is an arithmetic number, because the mean of its divisors is an integer number (17168760).

Almost surely, 2^231641839 is an apocalyptic number.

231641839 is a deficient number, since it is larger than the sum of its proper divisors (43058321).

231641839 is a wasteful number, since it uses less digits than its factorization.

231641839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15270.

The product of its digits is 31104, while the sum is 37.

The square root of 231641839 is about 15219.7844597090. The cubic root of 231641839 is about 614.1469999620.

The spelling of 231641839 in words is "two hundred thirty-one million, six hundred forty-one thousand, eight hundred thirty-nine".