1131545322 has 64 divisors (see below), whose sum is σ = 2665958400. Its totient is φ = 355129920.

The previous prime is 1131545309. The next prime is 1131545341. The reversal of 1131545322 is 2235451311.

1131545322 is a `hidden beast` number, since 113 + 1 + 545 + 3 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52804 + ... + 71072.

It is an arithmetic number, because the mean of its divisors is an integer number (41655600).

Almost surely, 2^1131545322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131545322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332979200).

1131545322 is an abundant number, since it is smaller than the sum of its proper divisors (1534413078).

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

1131545322 is a wasteful number, since it uses less digits than its factorization.

1131545322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18348 (or 18342 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1131545322 is about 33638.4500534730. The cubic root of 1131545322 is about 1042.0550225574.

Adding to 1131545322 its reverse (2235451311), we get a palindrome (3366996633).

The spelling of 1131545322 in words is "one billion, one hundred thirty-one million, five hundred forty-five thousand, three hundred twenty-two".