323011001220 has 48 divisors (see below), whose sum is σ = 928874885568. Its totient is φ = 83808259200.

The previous prime is 323011001197. The next prime is 323011001231. The reversal of 323011001220 is 22100110323.

It is a super-2 number, since 2×323011001220² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 323011001220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72748006 + ... + 72752445.

It is an arithmetic number, because the mean of its divisors is an integer number (19351560116).

Almost surely, 2^323011001220 is an apocalyptic number.

323011001220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

323011001220 is an abundant number, since it is smaller than the sum of its proper divisors (605863884348).

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

323011001220 is a wasteful number, since it uses less digits than its factorization.

323011001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145500500 (or 145500498 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 323011001220 its reverse (22100110323), we get a palindrome (345111111543).

The spelling of 323011001220 in words is "three hundred twenty-three billion, eleven million, one thousand, two hundred twenty".