1131321142 has 32 divisors (see below), whose sum is σ = 2088979200. Its totient is φ = 448646688.

The previous prime is 1131321127. The next prime is 1131321167. The reversal of 1131321142 is 2411231311.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38017 + ... + 60892.

It is an arithmetic number, because the mean of its divisors is an integer number (65280600).

Almost surely, 2^1131321142 is an apocalyptic number.

1131321142 is a deficient number, since it is larger than the sum of its proper divisors (957658058).

1131321142 is a wasteful number, since it uses less digits than its factorization.

1131321142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98980.

The product of its digits is 144, while the sum is 19.

The square root of 1131321142 is about 33635.1176897004. The cubic root of 1131321142 is about 1041.9862012386.

Adding to 1131321142 its reverse (2411231311), we get a palindrome (3542552453).

The spelling of 1131321142 in words is "one billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred forty-two".