111291413 has 4 divisors (see below), whose sum is σ = 111412140. Its totient is φ = 111170688.

The previous prime is 111291373. The next prime is 111291421. The reversal of 111291413 is 314192111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314192111 = 71 ⋅4425241.

It can be written as a sum of positive squares in 2 ways, for example, as 60497284 + 50794129 = 7778^2 + 7127^2 .

It is a cyclic number.

It is not a de Polignac number, because 111291413 - 2²⁴ = 94514197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111291613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58970 + ... + 60827.

It is an arithmetic number, because the mean of its divisors is an integer number (27853035).

Almost surely, 2^111291413 is an apocalyptic number.

It is an amenable number.

111291413 is a deficient number, since it is larger than the sum of its proper divisors (120727).

111291413 is an equidigital number, since it uses as much as digits as its factorization.

111291413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120726.

The product of its digits is 216, while the sum is 23.

The square root of 111291413 is about 10549.4745366772. The cubic root of 111291413 is about 481.0097565603.

The spelling of 111291413 in words is "one hundred eleven million, two hundred ninety-one thousand, four hundred thirteen".