1323231030020 has 24 divisors (see below), whose sum is σ = 2778822606168. Its totient is φ = 529285280000.

The previous prime is 1323231030019. The next prime is 1323231030139. The reversal of 1323231030020 is 200301323231.

It can be written as a sum of positive squares in 4 ways, for example, as 204273265156 + 1118957764864 = 451966^2 + 1057808^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1323231029974 and 1323231030001.

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, 1229120 + ... + 2038920.

It is an arithmetic number, because the mean of its divisors is an integer number (115784275257).

Almost surely, 2^{1323231030020} is an apocalyptic number.

1323231030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323231030020 is an abundant number, since it is smaller than the sum of its proper divisors (1455591576148).

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

1323231030020 is a wasteful number, since it uses less digits than its factorization.

1323231030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891511 (or 891509 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 1323231030020 its reverse (200301323231), we get a palindrome (1523532353251).

The spelling of 1323231030020 in words is "one trillion, three hundred twenty-three billion, two hundred thirty-one million, thirty thousand, twenty".