111043279 has 2 divisors, whose sum is σ = 111043280. Its totient is φ = 111043278.

The previous prime is 111043267. The next prime is 111043297. The reversal of 111043279 is 972340111.

Together with next prime (111043297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111043279 - 2⁷ = 111043151 is a prime.

It is a super-2 number, since 2×111043279² = 24661219622143682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111043879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55521639 + 55521640.

It is an arithmetic number, because the mean of its divisors is an integer number (55521640).

Almost surely, 2^111043279 is an apocalyptic number.

111043279 is a deficient number, since it is larger than the sum of its proper divisors (1).

111043279 is an equidigital number, since it uses as much as digits as its factorization.

111043279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 111043279 is about 10537.7074831293. The cubic root of 111043279 is about 480.6520060211.

It can be divided in two parts, 11 and 1043279, that added together give a triangular number (1043290 = T₁₄₄₄).

The spelling of 111043279 in words is "one hundred eleven million, forty-three thousand, two hundred seventy-nine".