111131133140 has 24 divisors (see below), whose sum is σ = 234584586600. Its totient is φ = 44222128128.

The previous prime is 111131133089. The next prime is 111131133161. The reversal of 111131133140 is 41331131111.

It can be written as a sum of positive squares in 4 ways, for example, as 18196391236 + 92934741904 = 134894^2 + 304852^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14391365 + ... + 14399084.

It is an arithmetic number, because the mean of its divisors is an integer number (9774357775).

Almost surely, 2^111131133140 is an apocalyptic number.

111131133140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111131133140 is an abundant number, since it is smaller than the sum of its proper divisors (123453453460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111131133140 is a wasteful number, since it uses less digits than its factorization.

111131133140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28790651 (or 28790649 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 111131133140 its reverse (41331131111), we get a palindrome (152462264251).

The spelling of 111131133140 in words is "one hundred eleven billion, one hundred thirty-one million, one hundred thirty-three thousand, one hundred forty".