1321134143 has 8 divisors (see below), whose sum is σ = 1528980480. Its totient is φ = 1118066040.

The previous prime is 1321134109. The next prime is 1321134151. The reversal of 1321134143 is 3414311231.

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

It is not a de Polignac number, because 1321134143 - 2⁶ = 1321134079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321134043) 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, 1193963 + ... + 1195068.

It is an arithmetic number, because the mean of its divisors is an integer number (191122560).

Almost surely, 2^1321134143 is an apocalyptic number.

1321134143 is a deficient number, since it is larger than the sum of its proper divisors (207846337).

1321134143 is an equidigital number, since it uses as much as digits as its factorization.

1321134143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389117.

The product of its digits is 864, while the sum is 23.

The square root of 1321134143 is about 36347.4090273296. The cubic root of 1321134143 is about 1097.2753899937.

Adding to 1321134143 its reverse (3414311231), we get a palindrome (4735445374).

The spelling of 1321134143 in words is "one billion, three hundred twenty-one million, one hundred thirty-four thousand, one hundred forty-three".