111051243 has 12 divisors (see below), whose sum is σ = 166348728. Its totient is φ = 74034000.

The previous prime is 111051223. The next prime is 111051251. The reversal of 111051243 is 342150111.

111051243 is a `hidden beast` number, since 1 + 110 + 512 + 43 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-111051243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111051203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228258 + ... + 228743.

It is an arithmetic number, because the mean of its divisors is an integer number (13862394).

Almost surely, 2^111051243 is an apocalyptic number.

111051243 is a deficient number, since it is larger than the sum of its proper divisors (55297485).

111051243 is an frugal number, since it uses more digits than its factorization.

111051243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457016 (or 457004 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 111051243 is about 10538.0853574072. The cubic root of 111051243 is about 480.6634964991.

The spelling of 111051243 in words is "one hundred eleven million, fifty-one thousand, two hundred forty-three".