111151243 has 4 divisors (see below), whose sum is σ = 127030000. Its totient is φ = 95272488.

The previous prime is 111151241. The next prime is 111151247. The reversal of 111151243 is 342151111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111151243 - 2¹ = 111151241 is a prime.

It is a super-4 number, since 4×111151243⁴ (a number of 33 digits) contains 4444 as substring.

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 111151243.

It is not an unprimeable number, because it can be changed into a prime (111151241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7939368 + ... + 7939381.

It is an arithmetic number, because the mean of its divisors is an integer number (31757500).

Almost surely, 2^111151243 is an apocalyptic number.

111151243 is a deficient number, since it is larger than the sum of its proper divisors (15878757).

111151243 is an equidigital number, since it uses as much as digits as its factorization.

111151243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15878756.

The product of its digits is 120, while the sum is 19.

The square root of 111151243 is about 10542.8289846701. The cubic root of 111151243 is about 480.8077300015.

The spelling of 111151243 in words is "one hundred eleven million, one hundred fifty-one thousand, two hundred forty-three".