791111431 has 6 divisors (see below), whose sum is σ = 869568896. Its totient is φ = 719192100.

The previous prime is 791111407. The next prime is 791111449. The reversal of 791111431 is 134111197.

It is not a de Polignac number, because 791111431 - 2¹¹ = 791109383 is a prime.

It is a super-2 number, since 2×791111431² = 1251714592517735522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 791111431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791111401) 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 in 5 ways as a sum of consecutive naturals, for example, 3268935 + ... + 3269176.

Almost surely, 2^791111431 is an apocalyptic number.

791111431 is a deficient number, since it is larger than the sum of its proper divisors (78457465).

791111431 is a wasteful number, since it uses less digits than its factorization.

791111431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6538133 (or 6538122 counting only the distinct ones).

The product of its digits is 756, while the sum is 28.

The square root of 791111431 is about 28126.7031662084. The cubic root of 791111431 is about 924.8668641110.

The spelling of 791111431 in words is "seven hundred ninety-one million, one hundred eleven thousand, four hundred thirty-one".