111523113240 has 512 divisors, whose sum is σ = 427286845440. Its totient is φ = 22616064000.

The previous prime is 111523113223. The next prime is 111523113263. The reversal of 111523113240 is 42311325111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 111523113240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 68125702 + ... + 68127338.

It is an arithmetic number, because the mean of its divisors is an integer number (834544620).

Almost surely, 2^111523113240 is an apocalyptic number.

111523113240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111523113240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213643422720).

111523113240 is an abundant number, since it is smaller than the sum of its proper divisors (315763732200).

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

111523113240 is a wasteful number, since it uses less digits than its factorization.

111523113240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843 (or 1839 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 111523113240 its reverse (42311325111), we get a palindrome (153834438351).

It can be divided in two parts, 11 and 1523113240, that added together give a palindrome (1523113251).

The spelling of 111523113240 in words is "one hundred eleven billion, five hundred twenty-three million, one hundred thirteen thousand, two hundred forty".