323131021120 has 56 divisors (see below), whose sum is σ = 771739253064. Its totient is φ = 128868827136.

The previous prime is 323131021111. The next prime is 323131021121. The reversal of 323131021120 is 21120131323.

It can be written as a sum of positive squares in 4 ways, for example, as 26681262336 + 296449758784 = 163344^2 + 544472^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323131021121) 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, 1390357 + ... + 1606036.

Almost surely, 2^323131021120 is an apocalyptic number.

It is an amenable number.

323131021120 is an abundant number, since it is smaller than the sum of its proper divisors (448608231944).

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

323131021120 is a wasteful number, since it uses less digits than its factorization.

323131021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996747 (or 2996737 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 323131021120 its reverse (21120131323), we get a palindrome (344251152443).

The spelling of 323131021120 in words is "three hundred twenty-three billion, one hundred thirty-one million, twenty-one thousand, one hundred twenty".