143715973 has 2 divisors, whose sum is σ = 143715974. Its totient is φ = 143715972.

The previous prime is 143715961. The next prime is 143715997. The reversal of 143715973 is 379517341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83777409 + 59938564 = 9153^2 + 7742^2 .

It is a cyclic number.

It is not a de Polignac number, because 143715973 - 2⁹ = 143715461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143715673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71857986 + 71857987.

It is an arithmetic number, because the mean of its divisors is an integer number (71857987).

Almost surely, 2^143715973 is an apocalyptic number.

It is an amenable number.

143715973 is a deficient number, since it is larger than the sum of its proper divisors (1).

143715973 is an equidigital number, since it uses as much as digits as its factorization.

143715973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 40.

The square root of 143715973 is about 11988.1597003043. The cubic root of 143715973 is about 523.8034403010.

The spelling of 143715973 in words is "one hundred forty-three million, seven hundred fifteen thousand, nine hundred seventy-three".