111481399 has 8 divisors (see below), whose sum is σ = 112275072. Its totient is φ = 110691000.

The previous prime is 111481397. The next prime is 111481429. The reversal of 111481399 is 993184111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111481399 - 2¹ = 111481397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111481397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125812 + ... + 126694.

It is an arithmetic number, because the mean of its divisors is an integer number (14034384).

Almost surely, 2^111481399 is an apocalyptic number.

111481399 is a deficient number, since it is larger than the sum of its proper divisors (793673).

111481399 is an equidigital number, since it uses as much as digits as its factorization.

111481399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637.

The product of its digits is 7776, while the sum is 37.

The square root of 111481399 is about 10558.4752213565. The cubic root of 111481399 is about 481.2833121597.

The spelling of 111481399 in words is "one hundred eleven million, four hundred eighty-one thousand, three hundred ninety-nine".