1131021360 has 640 divisors, whose sum is σ = 4875878400. Its totient is φ = 235146240.

The previous prime is 1131021349. The next prime is 1131021403. The reversal of 1131021360 is 631201311.

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

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, 8905617 + ... + 8905743.

It is an arithmetic number, because the mean of its divisors is an integer number (7618560).

Almost surely, 2^1131021360 is an apocalyptic number.

1131021360 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 1131021360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437939200).

1131021360 is an abundant number, since it is smaller than the sum of its proper divisors (3744857040).

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

1131021360 is a wasteful number, since it uses less digits than its factorization.

1131021360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1131021360 is about 33630.6610104529. The cubic root of 1131021360 is about 1041.8941565512.

Adding to 1131021360 its reverse (631201311), we get a palindrome (1762222671).

The spelling of 1131021360 in words is "one billion, one hundred thirty-one million, twenty-one thousand, three hundred sixty".