231175855540379 has 2 divisors, whose sum is σ = 231175855540380. Its totient is φ = 231175855540378.

The previous prime is 231175855540363. The next prime is 231175855540387. The reversal of 231175855540379 is 973045558571132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231175855540379 - 2⁴ = 231175855540363 is a prime.

It is not a weakly prime, because it can be changed into another prime (231175855540319) 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, 115587927770189 + 115587927770190.

It is an arithmetic number, because the mean of its divisors is an integer number (115587927770190).

Almost surely, 2^{231175855540379} is an apocalyptic number.

231175855540379 is a deficient number, since it is larger than the sum of its proper divisors (1).

231175855540379 is an equidigital number, since it uses as much as digits as its factorization.

231175855540379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760000, while the sum is 65.

The spelling of 231175855540379 in words is "two hundred thirty-one trillion, one hundred seventy-five billion, eight hundred fifty-five million, five hundred forty thousand, three hundred seventy-nine".