323121320220 has 24 divisors (see below), whose sum is σ = 904739696784. Its totient is φ = 86165685376.

The previous prime is 323121320213. The next prime is 323121320227. The reversal of 323121320220 is 22023121323.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (323121320213) and next prime (323121320227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323121320227) 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, 2692677609 + ... + 2692677728.

It is an arithmetic number, because the mean of its divisors is an integer number (37697487366).

Almost surely, 2^323121320220 is an apocalyptic number.

323121320220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

323121320220 is an abundant number, since it is smaller than the sum of its proper divisors (581618376564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

323121320220 is a wasteful number, since it uses less digits than its factorization.

323121320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5385355349 (or 5385355347 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 323121320220 its reverse (22023121323), we get a palindrome (345144441543).

The spelling of 323121320220 in words is "three hundred twenty-three billion, one hundred twenty-one million, three hundred twenty thousand, two hundred twenty".