231200444491 has 2 divisors, whose sum is σ = 231200444492. Its totient is φ = 231200444490.

The previous prime is 231200444477. The next prime is 231200444597. The reversal of 231200444491 is 194444002132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231200444491 - 2²¹ = 231198347339 is a prime.

It is not a weakly prime, because it can be changed into another prime (231200444401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600222245 + 115600222246.

It is an arithmetic number, because the mean of its divisors is an integer number (115600222246).

Almost surely, 2^231200444491 is an apocalyptic number.

231200444491 is a deficient number, since it is larger than the sum of its proper divisors (1).

231200444491 is an equidigital number, since it uses as much as digits as its factorization.

231200444491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 231200444491 in words is "two hundred thirty-one billion, two hundred million, four hundred forty-four thousand, four hundred ninety-one".