111320111031 has 32 divisors (see below), whose sum is σ = 152272673280. Its totient is φ = 72320630784.

The previous prime is 111320111003. The next prime is 111320111053. The reversal of 111320111031 is 130111023111.

It is not a de Polignac number, because 111320111031 - 2⁵ = 111320110999 is a prime.

It is a super-2 number, since 2×111320111031² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111320111031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111320111081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6582835 + ... + 6599723.

It is an arithmetic number, because the mean of its divisors is an integer number (4758521040).

Almost surely, 2^111320111031 is an apocalyptic number.

111320111031 is a deficient number, since it is larger than the sum of its proper divisors (40952562249).

111320111031 is a wasteful number, since it uses less digits than its factorization.

111320111031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17335.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 111320111031 its reverse (130111023111), we get a palindrome (241431134142).

The spelling of 111320111031 in words is "one hundred eleven billion, three hundred twenty million, one hundred eleven thousand, thirty-one".