111219349 has 4 divisors (see below), whose sum is σ = 112239820. Its totient is φ = 110198880.

The previous prime is 111219341. The next prime is 111219377. The reversal of 111219349 is 943912111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 943912111 = 23 ⋅41039657.

It can be written as a sum of positive squares in 2 ways, for example, as 45900625 + 65318724 = 6775^2 + 8082^2 .

It is a cyclic number.

It is not a de Polignac number, because 111219349 - 2³ = 111219341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111219349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111219341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510072 + ... + 510289.

It is an arithmetic number, because the mean of its divisors is an integer number (28059955).

Almost surely, 2^111219349 is an apocalyptic number.

It is an amenable number.

111219349 is a deficient number, since it is larger than the sum of its proper divisors (1020471).

111219349 is a wasteful number, since it uses less digits than its factorization.

111219349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020470.

The product of its digits is 1944, while the sum is 31.

The square root of 111219349 is about 10546.0584580212. The cubic root of 111219349 is about 480.9059121555.

The spelling of 111219349 in words is "one hundred eleven million, two hundred nineteen thousand, three hundred forty-nine".