1131320124 has 72 divisors (see below), whose sum is σ = 3138565248. Its totient is φ = 340751520.

The previous prime is 1131320111. The next prime is 1131320143. The reversal of 1131320124 is 4210231311.

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

It is a junction number, because it is equal to n+sod(n) for n = 1131320097 and 1131320106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57579 + ... + 74685.

It is an arithmetic number, because the mean of its divisors is an integer number (43591184).

Almost surely, 2^1131320124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131320124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569282624).

1131320124 is an abundant number, since it is smaller than the sum of its proper divisors (2007245124).

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

1131320124 is a wasteful number, since it uses less digits than its factorization.

1131320124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17295 (or 17290 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1131320124 is about 33635.1025567041. The cubic root of 1131320124 is about 1041.9858887007.

Adding to 1131320124 its reverse (4210231311), we get a palindrome (5341551435).

The spelling of 1131320124 in words is "one billion, one hundred thirty-one million, three hundred twenty thousand, one hundred twenty-four".