231403079 has 2 divisors, whose sum is σ = 231403080. Its totient is φ = 231403078.

The previous prime is 231403063. The next prime is 231403153. The reversal of 231403079 is 970304132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231403079 - 2⁴ = 231403063 is a prime.

It is equal to p_12715580 and since 231403079 and 12715580 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231403009) 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 as a sum of consecutive naturals, namely, 115701539 + 115701540.

It is an arithmetic number, because the mean of its divisors is an integer number (115701540).

Almost surely, 2^231403079 is an apocalyptic number.

231403079 is a deficient number, since it is larger than the sum of its proper divisors (1).

231403079 is an equidigital number, since it uses as much as digits as its factorization.

231403079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 231403079 is about 15211.9386995872. The cubic root of 231403079 is about 613.9359210149.

The spelling of 231403079 in words is "two hundred thirty-one million, four hundred three thousand, seventy-nine".