323431442020 has 24 divisors (see below), whose sum is σ = 679277277504. Its totient is φ = 129359005536.

The previous prime is 323431441981. The next prime is 323431442039. The reversal of 323431442020 is 20244134323.

It is a self number, because there is not a number n which added to its sum of digits gives 323431442020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651672 + ... + 1035151.

It is an arithmetic number, because the mean of its divisors is an integer number (28303219896).

Almost surely, 2^323431442020 is an apocalyptic number.

It is an amenable number.

323431442020 is an abundant number, since it is smaller than the sum of its proper divisors (355845835484).

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

323431442020 is a wasteful number, since it uses less digits than its factorization.

323431442020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696419 (or 1696417 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 323431442020 its reverse (20244134323), we get a palindrome (343675576343).

The spelling of 323431442020 in words is "three hundred twenty-three billion, four hundred thirty-one million, four hundred forty-two thousand, twenty".