111440130 has 64 divisors (see below), whose sum is σ = 283271040. Its totient is φ = 27979776.

The previous prime is 111440123. The next prime is 111440137. The reversal of 111440130 is 31044111.

It is an interprime number because it is at equal distance from previous prime (111440123) and next prime (111440137).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111440137) 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, 109504 + ... + 110516.

It is an arithmetic number, because the mean of its divisors is an integer number (4426110).

Almost surely, 2^111440130 is an apocalyptic number.

111440130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111440130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141635520).

111440130 is an abundant number, since it is smaller than the sum of its proper divisors (171830910).

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

111440130 is a wasteful number, since it uses less digits than its factorization.

111440130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 111440130 is about 10556.5207336508. The cubic root of 111440130 is about 481.2239165039.

Adding to 111440130 its reverse (31044111), we get a palindrome (142484241).

The spelling of 111440130 in words is "one hundred eleven million, four hundred forty thousand, one hundred thirty".