320043511252 has 12 divisors (see below), whose sum is σ = 563785259296. Its totient is φ = 158962008600.

The previous prime is 320043511219. The next prime is 320043511261. The reversal of 320043511252 is 252115340023.

It is a super-4 number, since 4×320043511252⁴ (a number of 47 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320043511252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264936078 + ... + 264937285.

Almost surely, 2^320043511252 is an apocalyptic number.

It is an amenable number.

320043511252 is a deficient number, since it is larger than the sum of its proper divisors (243741748044).

320043511252 is a wasteful number, since it uses less digits than its factorization.

320043511252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529873518 (or 529873516 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 320043511252 its reverse (252115340023), we get a palindrome (572158851275).

The spelling of 320043511252 in words is "three hundred twenty billion, forty-three million, five hundred eleven thousand, two hundred fifty-two".