230311212091 has 2 divisors, whose sum is σ = 230311212092. Its totient is φ = 230311212090.

The previous prime is 230311212077. The next prime is 230311212127. The reversal of 230311212091 is 190212113032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230311212091 - 2²⁹ = 229774341179 is a prime.

It is not a weakly prime, because it can be changed into another prime (230311218091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115155606045 + 115155606046.

It is an arithmetic number, because the mean of its divisors is an integer number (115155606046).

Almost surely, 2^230311212091 is an apocalyptic number.

230311212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

230311212091 is an equidigital number, since it uses as much as digits as its factorization.

230311212091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 230311212091 in words is "two hundred thirty billion, three hundred eleven million, two hundred twelve thousand, ninety-one".