111320239 has 2 divisors, whose sum is σ = 111320240. Its totient is φ = 111320238.

The previous prime is 111320203. The next prime is 111320291. The reversal of 111320239 is 932023111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111320239 is a prime.

It is a super-2 number, since 2×111320239² = 24784391222034242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111320939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55660119 + 55660120.

It is an arithmetic number, because the mean of its divisors is an integer number (55660120).

Almost surely, 2^111320239 is an apocalyptic number.

111320239 is a deficient number, since it is larger than the sum of its proper divisors (1).

111320239 is an equidigital number, since it uses as much as digits as its factorization.

111320239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 111320239 is about 10550.8406774058. The cubic root of 111320239 is about 481.0512823466.

The spelling of 111320239 in words is "one hundred eleven million, three hundred twenty thousand, two hundred thirty-nine".