320161215711 has 8 divisors (see below), whose sum is σ = 445441691520. Its totient is φ = 204160775192.

The previous prime is 320161215707. The next prime is 320161215739. The reversal of 320161215711 is 117512161023.

320161215711 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 320161215711 - 2² = 320161215707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320161215791) 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, 2320008741 + ... + 2320008878.

It is an arithmetic number, because the mean of its divisors is an integer number (55680211440).

Almost surely, 2^320161215711 is an apocalyptic number.

320161215711 is a deficient number, since it is larger than the sum of its proper divisors (125280475809).

320161215711 is a wasteful number, since it uses less digits than its factorization.

320161215711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640017645.

The product of its (nonzero) digits is 2520, while the sum is 30.

Adding to 320161215711 its reverse (117512161023), we get a palindrome (437673376734).

The spelling of 320161215711 in words is "three hundred twenty billion, one hundred sixty-one million, two hundred fifteen thousand, seven hundred eleven".