111631042 has 16 divisors (see below), whose sum is σ = 177883200. Its totient is φ = 52390800.

The previous prime is 111631021. The next prime is 111631073. The reversal of 111631042 is 240136111.

It is a super-2 number, since 2×111631042² = 24922979076011528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 9334 + ... + 17617.

It is an arithmetic number, because the mean of its divisors is an integer number (11117700).

Almost surely, 2^111631042 is an apocalyptic number.

111631042 is a deficient number, since it is larger than the sum of its proper divisors (66252158).

111631042 is a wasteful number, since it uses less digits than its factorization.

111631042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27081.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 111631042 is about 10565.5592374469. The cubic root of 111631042 is about 481.4985602596.

Adding to 111631042 its reverse (240136111), we get a palindrome (351767153).

The spelling of 111631042 in words is "one hundred eleven million, six hundred thirty-one thousand, forty-two".