111432613 has 4 divisors (see below), whose sum is σ = 111465388. Its totient is φ = 111399840.

The previous prime is 111432599. The next prime is 111432617. The reversal of 111432613 is 316234111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100661089 + 10771524 = 10033^2 + 3282^2 .

It is a cyclic number.

It is not a de Polignac number, because 111432613 - 2²¹ = 109335461 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 (111432617) 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 3 ways as a sum of consecutive naturals, for example, 10608 + ... + 18313.

It is an arithmetic number, because the mean of its divisors is an integer number (27866347).

Almost surely, 2^111432613 is an apocalyptic number.

It is an amenable number.

111432613 is a deficient number, since it is larger than the sum of its proper divisors (32775).

111432613 is an equidigital number, since it uses as much as digits as its factorization.

111432613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32774.

The product of its digits is 432, while the sum is 22.

The square root of 111432613 is about 10556.1646917808. The cubic root of 111432613 is about 481.2130962200.

Adding to 111432613 its reverse (316234111), we get a palindrome (427666724).

The spelling of 111432613 in words is "one hundred eleven million, four hundred thirty-two thousand, six hundred thirteen".