111812397 has 16 divisors (see below), whose sum is σ = 157402560. Its totient is φ = 70405632.

The previous prime is 111812387. The next prime is 111812399. The reversal of 111812397 is 793218111.

It is not a de Polignac number, because 111812397 - 2⁶ = 111812333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111812399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17343 + ... + 22899.

It is an arithmetic number, because the mean of its divisors is an integer number (9837660).

Almost surely, 2^111812397 is an apocalyptic number.

It is an amenable number.

111812397 is a deficient number, since it is larger than the sum of its proper divisors (45590163).

111812397 is a wasteful number, since it uses less digits than its factorization.

111812397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932.

The product of its digits is 3024, while the sum is 33.

The square root of 111812397 is about 10574.1381209061. The cubic root of 111812397 is about 481.7591655679.

The spelling of 111812397 in words is "one hundred eleven million, eight hundred twelve thousand, three hundred ninety-seven".