1323003001020 has 48 divisors (see below), whose sum is σ = 3704556055200. Its totient is φ = 352786738176.

The previous prime is 1323003000989. The next prime is 1323003001027. The reversal of 1323003001020 is 201003003231.

It is a super-2 number, since 2×1323003001020² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323003001027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1124424 + ... + 1977456.

It is an arithmetic number, because the mean of its divisors is an integer number (77178251150).

Almost surely, 2^{1323003001020} is an apocalyptic number.

1323003001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323003001020 is an abundant number, since it is smaller than the sum of its proper divisors (2381553054180).

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

1323003001020 is a wasteful number, since it uses less digits than its factorization.

1323003001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878894 (or 878892 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 1323003001020 its reverse (201003003231), we get a palindrome (1524006004251).

The spelling of 1323003001020 in words is "one trillion, three hundred twenty-three billion, three million, one thousand, twenty".