1131022044 has 36 divisors (see below), whose sum is σ = 3009446440. Its totient is φ = 357164640.

The previous prime is 1131022027. The next prime is 1131022051. The reversal of 1131022044 is 4402201311.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 826087 + ... + 827454.

Almost surely, 2^1131022044 is an apocalyptic number.

It is an amenable number.

1131022044 is an abundant number, since it is smaller than the sum of its proper divisors (1878424396).

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

1131022044 is a wasteful number, since it uses less digits than its factorization.

1131022044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653570 (or 1653565 counting only the distinct ones).

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

The square root of 1131022044 is about 33630.6711797431. The cubic root of 1131022044 is about 1041.8943665843.

Adding to 1131022044 its reverse (4402201311), we get a palindrome (5533223355).

The spelling of 1131022044 in words is "one billion, one hundred thirty-one million, twenty-two thousand, forty-four".