111440001131 has 4 divisors (see below), whose sum is σ = 111443165592. Its totient is φ = 111436836672.

The previous prime is 111440001121. The next prime is 111440001149. The reversal of 111440001131 is 131100044111.

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

It is a cyclic number.

It is not a de Polignac number, because 111440001131 - 2²² = 111435806827 is a prime.

It is a super-2 number, since 2×111440001131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111440001121) 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, 1528805 + ... + 1600038.

It is an arithmetic number, because the mean of its divisors is an integer number (27860791398).

Almost surely, 2^111440001131 is an apocalyptic number.

111440001131 is a deficient number, since it is larger than the sum of its proper divisors (3164461).

111440001131 is an equidigital number, since it uses as much as digits as its factorization.

111440001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164460.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111440001131 its reverse (131100044111), we get a palindrome (242540045242).

The spelling of 111440001131 in words is "one hundred eleven billion, four hundred forty million, one thousand, one hundred thirty-one".