1131321136 has 40 divisors (see below), whose sum is σ = 2393846784. Its totient is φ = 513668160.

The previous prime is 1131321127. The next prime is 1131321167. The reversal of 1131321136 is 6311231311.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184065 + ... + 190111.

Almost surely, 2^1131321136 is an apocalyptic number.

1131321136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1131321136 is an abundant number, since it is smaller than the sum of its proper divisors (1262525648).

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

1131321136 is a wasteful number, since it uses less digits than its factorization.

1131321136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129 (or 7123 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

The square root of 1131321136 is about 33635.1176005080. The cubic root of 1131321136 is about 1041.9861993965.

Adding to 1131321136 its reverse (6311231311), we get a palindrome (7442552447).

The spelling of 1131321136 in words is "one billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred thirty-six".