231808079 has 2 divisors, whose sum is σ = 231808080. Its totient is φ = 231808078.

The previous prime is 231808067. The next prime is 231808097. The reversal of 231808079 is 970808132.

Together with next prime (231808097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231808079 - 2¹² = 231803983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231808579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115904039 + 115904040.

It is an arithmetic number, because the mean of its divisors is an integer number (115904040).

Almost surely, 2^231808079 is an apocalyptic number.

231808079 is a deficient number, since it is larger than the sum of its proper divisors (1).

231808079 is an equidigital number, since it uses as much as digits as its factorization.

231808079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 231808079 is about 15225.2447927776. The cubic root of 231808079 is about 614.2938810035.

The spelling of 231808079 in words is "two hundred thirty-one million, eight hundred eight thousand, seventy-nine".