143319797 has 4 divisors (see below), whose sum is σ = 143431596. Its totient is φ = 143208000.

The previous prime is 143319773. The next prime is 143319811. The reversal of 143319797 is 797913341.

143319797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 136212241 + 7107556 = 11671^2 + 2666^2 .

It is a cyclic number.

It is not a de Polignac number, because 143319797 - 2⁶ = 143319733 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 (143309797) 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, 53954 + ... + 56547.

It is an arithmetic number, because the mean of its divisors is an integer number (35857899).

Almost surely, 2^143319797 is an apocalyptic number.

It is an amenable number.

143319797 is a deficient number, since it is larger than the sum of its proper divisors (111799).

143319797 is a wasteful number, since it uses less digits than its factorization.

143319797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111798.

The product of its digits is 142884, while the sum is 44.

The square root of 143319797 is about 11971.6246600033. The cubic root of 143319797 is about 523.3216814405.

The spelling of 143319797 in words is "one hundred forty-three million, three hundred nineteen thousand, seven hundred ninety-seven".