1142331321 has 8 divisors (see below), whose sum is σ = 1523390944. Its totient is φ = 761412960.

The previous prime is 1142331277. The next prime is 1142331347. The reversal of 1142331321 is 1231332411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1142331321 - 2¹¹ = 1142329273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142331361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14731 + ... + 50016.

It is an arithmetic number, because the mean of its divisors is an integer number (190423868).

Almost surely, 2^1142331321 is an apocalyptic number.

It is an amenable number.

1142331321 is a deficient number, since it is larger than the sum of its proper divisors (381059623).

1142331321 is an equidigital number, since it uses as much as digits as its factorization.

1142331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70631.

The product of its digits is 432, while the sum is 21.

The square root of 1142331321 is about 33798.3922842493. The cubic root of 1142331321 is about 1045.3555473081.

Adding to 1142331321 its reverse (1231332411), we get a palindrome (2373663732).

The spelling of 1142331321 in words is "one billion, one hundred forty-two million, three hundred thirty-one thousand, three hundred twenty-one".