1113111540 has 72 divisors (see below), whose sum is σ = 3379252968. Its totient is φ = 296582400.

The previous prime is 1113111539. The next prime is 1113111541. The reversal of 1113111540 is 451113111.

1113111540 is a `hidden beast` number, since 1 + 1 + 13 + 111 + 540 = 666.

1113111540 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1113111539) and next prime (1113111541).

It can be written as a sum of positive squares in 4 ways, for example, as 196112016 + 916999524 = 14004^2 + 30282^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113111541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340554 + ... + 343806.

It is an arithmetic number, because the mean of its divisors is an integer number (46934069).

Almost surely, 2^1113111540 is an apocalyptic number.

1113111540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113111540 is an abundant number, since it is smaller than the sum of its proper divisors (2266141428).

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

1113111540 is a wasteful number, since it uses less digits than its factorization.

1113111540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169 (or 5164 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

The square root of 1113111540 is about 33363.3262730202. The cubic root of 1113111540 is about 1036.3653757631.

Adding to 1113111540 its reverse (451113111), we get a palindrome (1564224651).

The spelling of 1113111540 in words is "one billion, one hundred thirteen million, one hundred eleven thousand, five hundred forty".