320142851 has 8 divisors (see below), whose sum is σ = 365986560. Its totient is φ = 274326408.

The previous prime is 320142829. The next prime is 320142853. The reversal of 320142851 is 158241023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320142851 - 2¹⁰ = 320141827 is a prime.

It is a super-4 number, since 4×320142851⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320142851.

It is not an unprimeable number, because it can be changed into a prime (320142853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38090 + ... + 45728.

It is an arithmetic number, because the mean of its divisors is an integer number (45748320).

Almost surely, 2^320142851 is an apocalyptic number.

320142851 is a deficient number, since it is larger than the sum of its proper divisors (45843709).

320142851 is an equidigital number, since it uses as much as digits as its factorization.

320142851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13633.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 320142851 is about 17892.5361813243. The cubic root of 320142851 is about 684.0921434351.

Adding to 320142851 its reverse (158241023), we get a palindrome (478383874).

The spelling of 320142851 in words is "three hundred twenty million, one hundred forty-two thousand, eight hundred fifty-one".