194042963131 has 2 divisors, whose sum is σ = 194042963132. Its totient is φ = 194042963130.

The previous prime is 194042963129. The next prime is 194042963171. The reversal of 194042963131 is 131369240491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194042963131 - 2¹ = 194042963129 is a prime.

It is a super-2 number, since 2×194042963131² (a number of 23 digits) contains 22 as substring.

Together with 194042963129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (194042963171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97021481565 + 97021481566.

It is an arithmetic number, because the mean of its divisors is an integer number (97021481566).

Almost surely, 2^194042963131 is an apocalyptic number.

194042963131 is a deficient number, since it is larger than the sum of its proper divisors (1).

194042963131 is an equidigital number, since it uses as much as digits as its factorization.

194042963131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 194042963131 in words is "one hundred ninety-four billion, forty-two million, nine hundred sixty-three thousand, one hundred thirty-one".