111555313 has 4 divisors (see below), whose sum is σ = 116405568. Its totient is φ = 106705060.

The previous prime is 111555307. The next prime is 111555319. The reversal of 111555313 is 313555111.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (111555307) and next prime (111555319).

It is a cyclic number.

It is not a de Polignac number, because 111555313 - 2⁵ = 111555281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111555319) 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, 2425093 + ... + 2425138.

It is an arithmetic number, because the mean of its divisors is an integer number (29101392).

Almost surely, 2^111555313 is an apocalyptic number.

It is an amenable number.

111555313 is a deficient number, since it is larger than the sum of its proper divisors (4850255).

111555313 is an equidigital number, since it uses as much as digits as its factorization.

111555313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850254.

The product of its digits is 1125, while the sum is 25.

The square root of 111555313 is about 10561.9748626855. The cubic root of 111555313 is about 481.3896549098.

The spelling of 111555313 in words is "one hundred eleven million, five hundred fifty-five thousand, three hundred thirteen".