1143340973 has 4 divisors (see below), whose sum is σ = 1144126080. Its totient is φ = 1142555868.

The previous prime is 1143340969. The next prime is 1143340993. The reversal of 1143340973 is 3790433411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3790433411 = 67 ⋅56573633.

It is a cyclic number.

It is not a de Polignac number, because 1143340973 - 2² = 1143340969 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 (1143340943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390365 + ... + 393282.

It is an arithmetic number, because the mean of its divisors is an integer number (286031520).

Almost surely, 2^1143340973 is an apocalyptic number.

It is an amenable number.

1143340973 is a deficient number, since it is larger than the sum of its proper divisors (785107).

1143340973 is an equidigital number, since it uses as much as digits as its factorization.

1143340973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785106.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1143340973 is about 33813.3253762477. The cubic root of 1143340973 is about 1045.6634365342.

The spelling of 1143340973 in words is "one billion, one hundred forty-three million, three hundred forty thousand, nine hundred seventy-three".