111131996 has 24 divisors (see below), whose sum is σ = 198258144. Its totient is φ = 54492480.

The previous prime is 111131981. The next prime is 111132001. The reversal of 111131996 is 699131111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149201 + ... + 149943.

It is an arithmetic number, because the mean of its divisors is an integer number (8260756).

Almost surely, 2^111131996 is an apocalyptic number.

It is an amenable number.

111131996 is a deficient number, since it is larger than the sum of its proper divisors (87126148).

111131996 is a wasteful number, since it uses less digits than its factorization.

111131996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1419 counting only the distinct ones).

The product of its digits is 1458, while the sum is 32.

The square root of 111131996 is about 10541.9161446105. The cubic root of 111131996 is about 480.7799761041.

The spelling of 111131996 in words is "one hundred eleven million, one hundred thirty-one thousand, nine hundred ninety-six".