231302321291 has 2 divisors, whose sum is σ = 231302321292. Its totient is φ = 231302321290.

The previous prime is 231302321269. The next prime is 231302321311. The reversal of 231302321291 is 192123203132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231302321291 - 2¹⁴ = 231302304907 is a prime.

It is not a weakly prime, because it can be changed into another prime (231302321251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115651160645 + 115651160646.

It is an arithmetic number, because the mean of its divisors is an integer number (115651160646).

Almost surely, 2^231302321291 is an apocalyptic number.

231302321291 is a deficient number, since it is larger than the sum of its proper divisors (1).

231302321291 is an equidigital number, since it uses as much as digits as its factorization.

231302321291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 231302321291 in words is "two hundred thirty-one billion, three hundred two million, three hundred twenty-one thousand, two hundred ninety-one".