111120131 has 4 divisors (see below), whose sum is σ = 111260352. Its totient is φ = 110979912.

The previous prime is 111120091. The next prime is 111120133. The reversal of 111120131 is 131021111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131021111 = 13 ⋅10078547.

It is a cyclic number.

It is not a de Polignac number, because 111120131 - 2⁶ = 111120067 is a prime.

It is a super-2 number, since 2×111120131² = 24695367026914322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111120133) 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, 68915 + ... + 70508.

It is an arithmetic number, because the mean of its divisors is an integer number (27815088).

Almost surely, 2^111120131 is an apocalyptic number.

111120131 is a deficient number, since it is larger than the sum of its proper divisors (140221).

111120131 is an equidigital number, since it uses as much as digits as its factorization.

111120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140220.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 111120131 is about 10541.3533761088. The cubic root of 111120131 is about 480.7628653480.

Adding to 111120131 its reverse (131021111), we get a palindrome (242141242).

The spelling of 111120131 in words is "one hundred eleven million, one hundred twenty thousand, one hundred thirty-one".