1131020244 has 72 divisors (see below), whose sum is σ = 2991835392. Its totient is φ = 359821440.

The previous prime is 1131020243. The next prime is 1131020339. The reversal of 1131020244 is 4420201311.

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 (1131020243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74527 + ... + 88409.

Almost surely, 2^1131020244 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 1131020244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495917696).

1131020244 is an abundant number, since it is smaller than the sum of its proper divisors (1860815148).

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

1131020244 is a wasteful number, since it uses less digits than its factorization.

1131020244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13997 (or 13992 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1131020244 is about 33630.6444184467. The cubic root of 1131020244 is about 1041.8938138656.

Adding to 1131020244 its reverse (4420201311), we get a palindrome (5551221555).

The spelling of 1131020244 in words is "one billion, one hundred thirty-one million, twenty thousand, two hundred forty-four".