111403213 has 4 divisors (see below), whose sum is σ = 117266560. Its totient is φ = 105539868.

The previous prime is 111403211. The next prime is 111403219. The reversal of 111403213 is 312304111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312304111 = 7 ⋅44614873.

It is a cyclic number.

It is not a de Polignac number, because 111403213 - 2¹ = 111403211 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 (111403211) 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, 2931645 + ... + 2931682.

It is an arithmetic number, because the mean of its divisors is an integer number (29316640).

Almost surely, 2^111403213 is an apocalyptic number.

It is an amenable number.

111403213 is a deficient number, since it is larger than the sum of its proper divisors (5863347).

111403213 is an equidigital number, since it uses as much as digits as its factorization.

111403213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863346.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 111403213 is about 10554.7720486991. The cubic root of 111403213 is about 481.1707719577.

Adding to 111403213 its reverse (312304111), we get a palindrome (423707324).

The spelling of 111403213 in words is "one hundred eleven million, four hundred three thousand, two hundred thirteen".