320213213441 has 4 divisors (see below), whose sum is σ = 349323505584. Its totient is φ = 291102921300.

The previous prime is 320213213429. The next prime is 320213213483. The reversal of 320213213441 is 144312312023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144312312023 = 11 ⋅13119301093.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320213213441 is a prime.

It is a super-2 number, since 2×320213213441² (a number of 24 digits) contains 22 as substring.

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 320213213441.

It is not an unprimeable number, because it can be changed into a prime (320213213041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14555146055 + ... + 14555146076.

It is an arithmetic number, because the mean of its divisors is an integer number (87330876396).

Almost surely, 2^320213213441 is an apocalyptic number.

It is an amenable number.

320213213441 is a deficient number, since it is larger than the sum of its proper divisors (29110292143).

320213213441 is a wasteful number, since it uses less digits than its factorization.

320213213441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29110292142.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 320213213441 its reverse (144312312023), we get a palindrome (464525525464).

The spelling of 320213213441 in words is "three hundred twenty billion, two hundred thirteen million, two hundred thirteen thousand, four hundred forty-one".