320143052 has 6 divisors (see below), whose sum is σ = 560250348. Its totient is φ = 160071524.

The previous prime is 320143013. The next prime is 320143069. The reversal of 320143052 is 250341023.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40017878 + ... + 40017885.

It is an arithmetic number, because the mean of its divisors is an integer number (93375058).

Almost surely, 2^320143052 is an apocalyptic number.

It is an amenable number.

320143052 is a deficient number, since it is larger than the sum of its proper divisors (240107296).

320143052 is a wasteful number, since it uses less digits than its factorization.

320143052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80035767 (or 80035765 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 320143052 is about 17892.5417981907. The cubic root of 320143052 is about 684.0922866029.

Adding to 320143052 its reverse (250341023), we get a palindrome (570484075).

The spelling of 320143052 in words is "three hundred twenty million, one hundred forty-three thousand, fifty-two".