111291941 has 4 divisors (see below), whose sum is σ = 111791232. Its totient is φ = 110792652.

The previous prime is 111291913. The next prime is 111291977. The reversal of 111291941 is 149192111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111291941 - 2¹⁰ = 111290917 is a prime.

It is a super-2 number, since 2×111291941² = 24771792263094962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111291041) 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, 249311 + ... + 249756.

It is an arithmetic number, because the mean of its divisors is an integer number (27947808).

Almost surely, 2^111291941 is an apocalyptic number.

It is an amenable number.

111291941 is a deficient number, since it is larger than the sum of its proper divisors (499291).

111291941 is an equidigital number, since it uses as much as digits as its factorization.

111291941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499290.

The product of its digits is 648, while the sum is 29.

The square root of 111291941 is about 10549.4995615906. The cubic root of 111291941 is about 481.0105172442.

The spelling of 111291941 in words is "one hundred eleven million, two hundred ninety-one thousand, nine hundred forty-one".