191047682131 has 4 divisors (see below), whose sum is σ = 191080240000. Its totient is φ = 191015124264.

The previous prime is 191047682123. The next prime is 191047682171. The reversal of 191047682131 is 131286740191.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 191047682131 - 2³ = 191047682123 is a prime.

It is a super-2 number, since 2×191047682131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191047682171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16270131 + ... + 16281868.

It is an arithmetic number, because the mean of its divisors is an integer number (47770060000).

Almost surely, 2^191047682131 is an apocalyptic number.

191047682131 is a deficient number, since it is larger than the sum of its proper divisors (32557869).

191047682131 is an equidigital number, since it uses as much as digits as its factorization.

191047682131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32557868.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 191047682131 in words is "one hundred ninety-one billion, forty-seven million, six hundred eighty-two thousand, one hundred thirty-one".