231876439 has 2 divisors, whose sum is σ = 231876440. Its totient is φ = 231876438.

The previous prime is 231876401. The next prime is 231876457. The reversal of 231876439 is 934678132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231876439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231876395 and 231876404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231876499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115938219 + 115938220.

It is an arithmetic number, because the mean of its divisors is an integer number (115938220).

Almost surely, 2^231876439 is an apocalyptic number.

231876439 is a deficient number, since it is larger than the sum of its proper divisors (1).

231876439 is an equidigital number, since it uses as much as digits as its factorization.

231876439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 231876439 is about 15227.4895829877. The cubic root of 231876439 is about 614.3542599783.

The spelling of 231876439 in words is "two hundred thirty-one million, eight hundred seventy-six thousand, four hundred thirty-nine".