231852287 has 2 divisors, whose sum is σ = 231852288. Its totient is φ = 231852286.

The previous prime is 231852223. The next prime is 231852301. The reversal of 231852287 is 782258132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231852287 - 2⁶ = 231852223 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231852287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231852487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115926143 + 115926144.

It is an arithmetic number, because the mean of its divisors is an integer number (115926144).

Almost surely, 2^231852287 is an apocalyptic number.

231852287 is a deficient number, since it is larger than the sum of its proper divisors (1).

231852287 is an equidigital number, since it uses as much as digits as its factorization.

231852287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 231852287 is about 15226.6965228837. The cubic root of 231852287 is about 614.3329290784.

The spelling of 231852287 in words is "two hundred thirty-one million, eight hundred fifty-two thousand, two hundred eighty-seven".