1143121343 has 12 divisors (see below), whose sum is σ = 1432042920. Its totient is φ = 904447152.

The previous prime is 1143121313. The next prime is 1143121349. The reversal of 1143121343 is 3431213411.

It is not a de Polignac number, because 1143121343 - 2¹⁴ = 1143104959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143121349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 896633 + ... + 897906.

It is an arithmetic number, because the mean of its divisors is an integer number (119336910).

Almost surely, 2^1143121343 is an apocalyptic number.

1143121343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1143121343 is a deficient number, since it is larger than the sum of its proper divisors (288921577).

1143121343 is a wasteful number, since it uses less digits than its factorization.

1143121343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794566 (or 1794559 counting only the distinct ones).

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

The square root of 1143121343 is about 33810.0775361430. The cubic root of 1143121343 is about 1045.5964766996.

Adding to 1143121343 its reverse (3431213411), we get a palindrome (4574334754).

The spelling of 1143121343 in words is "one billion, one hundred forty-three million, one hundred twenty-one thousand, three hundred forty-three".