111319399 has 2 divisors, whose sum is σ = 111319400. Its totient is φ = 111319398.

The previous prime is 111319391. The next prime is 111319441. The reversal of 111319399 is 993913111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111319399 - 2³ = 111319391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111319391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55659699 + 55659700.

It is an arithmetic number, because the mean of its divisors is an integer number (55659700).

Almost surely, 2^111319399 is an apocalyptic number.

111319399 is a deficient number, since it is larger than the sum of its proper divisors (1).

111319399 is an equidigital number, since it uses as much as digits as its factorization.

111319399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6561, while the sum is 37.

The square root of 111319399 is about 10550.8008700762. The cubic root of 111319399 is about 481.0500723716.

The spelling of 111319399 in words is "one hundred eleven million, three hundred nineteen thousand, three hundred ninety-nine".