1111143172 has 12 divisors (see below), whose sum is σ = 1946198016. Its totient is φ = 555086600.

The previous prime is 1111143169. The next prime is 1111143181. The reversal of 1111143172 is 2713411111.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116068 + ... + 125275.

It is an arithmetic number, because the mean of its divisors is an integer number (162183168).

Almost surely, 2^1111143172 is an apocalyptic number.

It is an amenable number.

1111143172 is a deficient number, since it is larger than the sum of its proper divisors (835054844).

1111143172 is a wasteful number, since it uses less digits than its factorization.

1111143172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242498 (or 242496 counting only the distinct ones).

The product of its digits is 168, while the sum is 22.

The square root of 1111143172 is about 33333.8142431976. The cubic root of 1111143172 is about 1035.7541306191.

Adding to 1111143172 its reverse (2713411111), we get a palindrome (3824554283).

The spelling of 1111143172 in words is "one billion, one hundred eleven million, one hundred forty-three thousand, one hundred seventy-two".