111403231011 has 10 divisors (see below), whose sum is σ = 166417172372. Its totient is φ = 74268820620.

The previous prime is 111403231007. The next prime is 111403231039. The reversal of 111403231011 is 110132304111.

It is a happy number.

It is not a de Polignac number, because 111403231011 - 2² = 111403231007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111403231061) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 687674185 + ... + 687674346.

Almost surely, 2^111403231011 is an apocalyptic number.

111403231011 is a deficient number, since it is larger than the sum of its proper divisors (55013941361).

111403231011 is an equidigital number, since it uses as much as digits as its factorization.

111403231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375348543 (or 1375348534 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111403231011 its reverse (110132304111), we get a palindrome (221535535122).

The spelling of 111403231011 in words is "one hundred eleven billion, four hundred three million, two hundred thirty-one thousand, eleven".