111400131 has 4 divisors (see below), whose sum is σ = 148533512. Its totient is φ = 74266752.

The previous prime is 111400129. The next prime is 111400141. The reversal of 111400131 is 131004111.

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

It is not a de Polignac number, because 111400131 - 2¹ = 111400129 is a prime.

It is a super-2 number, since 2×111400131² = 24819978373634322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111400141) 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, 18566686 + ... + 18566691.

It is an arithmetic number, because the mean of its divisors is an integer number (37133378).

Almost surely, 2^111400131 is an apocalyptic number.

111400131 is a deficient number, since it is larger than the sum of its proper divisors (37133381).

111400131 is an equidigital number, since it uses as much as digits as its factorization.

111400131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37133380.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 111400131 is about 10554.6260473785. The cubic root of 111400131 is about 481.1663346770.

Adding to 111400131 its reverse (131004111), we get a palindrome (242404242).

The spelling of 111400131 in words is "one hundred eleven million, four hundred thousand, one hundred thirty-one".