194731294231 has 2 divisors, whose sum is σ = 194731294232. Its totient is φ = 194731294230.

The previous prime is 194731294223. The next prime is 194731294301. The reversal of 194731294231 is 132492137491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194731294231 - 2³ = 194731294223 is a prime.

It is a super-2 number, since 2×194731294231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194731297231) 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, 97365647115 + 97365647116.

It is an arithmetic number, because the mean of its divisors is an integer number (97365647116).

Almost surely, 2^194731294231 is an apocalyptic number.

194731294231 is a deficient number, since it is larger than the sum of its proper divisors (1).

194731294231 is an equidigital number, since it uses as much as digits as its factorization.

194731294231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The spelling of 194731294231 in words is "one hundred ninety-four billion, seven hundred thirty-one million, two hundred ninety-four thousand, two hundred thirty-one".