1143431128187 has 2 divisors, whose sum is σ = 1143431128188. Its totient is φ = 1143431128186.

The previous prime is 1143431128163. The next prime is 1143431128267. The reversal of 1143431128187 is 7818211343411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143431128187 - 2⁶ = 1143431128123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143431128787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571715564093 + 571715564094.

It is an arithmetic number, because the mean of its divisors is an integer number (571715564094).

Almost surely, 2^{1143431128187} is an apocalyptic number.

1143431128187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143431128187 is an equidigital number, since it uses as much as digits as its factorization.

1143431128187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The spelling of 1143431128187 in words is "one trillion, one hundred forty-three billion, four hundred thirty-one million, one hundred twenty-eight thousand, one hundred eighty-seven".