1143431128199 has 4 divisors (see below), whose sum is σ = 1157207406936. Its totient is φ = 1129654849464.

The previous prime is 1143431128187. The next prime is 1143431128267. The reversal of 1143431128199 is 9918211343411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143431128199 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 (1143431128159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6888139244 + ... + 6888139409.

It is an arithmetic number, because the mean of its divisors is an integer number (289301851734).

Almost surely, 2^{1143431128199} is an apocalyptic number.

1143431128199 is a deficient number, since it is larger than the sum of its proper divisors (13776278737).

1143431128199 is an equidigital number, since it uses as much as digits as its factorization.

1143431128199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13776278736.

The product of its digits is 186624, while the sum is 47.

The spelling of 1143431128199 in words is "one trillion, one hundred forty-three billion, four hundred thirty-one million, one hundred twenty-eight thousand, one hundred ninety-nine".