231141760391 has 2 divisors, whose sum is σ = 231141760392. Its totient is φ = 231141760390.

The previous prime is 231141760373. The next prime is 231141760403. The reversal of 231141760391 is 193067141132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231141760391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231141760361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115570880195 + 115570880196.

It is an arithmetic number, because the mean of its divisors is an integer number (115570880196).

Almost surely, 2^231141760391 is an apocalyptic number.

231141760391 is a deficient number, since it is larger than the sum of its proper divisors (1).

231141760391 is an equidigital number, since it uses as much as digits as its factorization.

231141760391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 231141760391 in words is "two hundred thirty-one billion, one hundred forty-one million, seven hundred sixty thousand, three hundred ninety-one".