1131024220 has 12 divisors (see below), whose sum is σ = 2375150904. Its totient is φ = 452409680.

The previous prime is 1131024217. The next prime is 1131024233. The reversal of 1131024220 is 224201311.

It is a junction number, because it is equal to n+sod(n) for n = 1131024194 and 1131024203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28275586 + ... + 28275625.

It is an arithmetic number, because the mean of its divisors is an integer number (197929242).

Almost surely, 2^1131024220 is an apocalyptic number.

1131024220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131024220 is an abundant number, since it is smaller than the sum of its proper divisors (1244126684).

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

1131024220 is a wasteful number, since it uses less digits than its factorization.

1131024220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56551220 (or 56551218 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1131024220 is about 33630.7035311484. The cubic root of 1131024220 is about 1041.8950347589.

Adding to 1131024220 its reverse (224201311), we get a palindrome (1355225531).

The spelling of 1131024220 in words is "one billion, one hundred thirty-one million, twenty-four thousand, two hundred twenty".