143268813 has 12 divisors (see below), whose sum is σ = 207183808. Its totient is φ = 95401800.

The previous prime is 143268779. The next prime is 143268821. The reversal of 143268813 is 318862341.

It is not a de Polignac number, because 143268813 - 2¹² = 143264717 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 (143268823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613 + ... + 16938.

Almost surely, 2^143268813 is an apocalyptic number.

It is an amenable number.

143268813 is a deficient number, since it is larger than the sum of its proper divisors (63914995).

143268813 is a wasteful number, since it uses less digits than its factorization.

143268813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18464 (or 18461 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 143268813 is about 11969.4951021336. The cubic root of 143268813 is about 523.2596193072.

The spelling of 143268813 in words is "one hundred forty-three million, two hundred sixty-eight thousand, eight hundred thirteen".