1002320323020 has 72 divisors (see below), whose sum is σ = 3122543873904. Its totient is φ = 260061487488.

The previous prime is 1002320323019. The next prime is 1002320323021. The reversal of 1002320323020 is 203230232001.

It is a happy number.

1002320323020 is a `hidden beast` number, since 1 + 0 + 0 + 2 + 320 + 323 + 0 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (1002320323019) and next prime (1002320323021).

It is a super-3 number, since 3×1002320323020³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1002320322984 and 1002320323002.

It is not an unprimeable number, because it can be changed into a prime (1002320323021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75242614 + ... + 75255933.

Almost surely, 2^{1002320323020} is an apocalyptic number.

1002320323020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002320323020 is an abundant number, since it is smaller than the sum of its proper divisors (2120223550884).

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

1002320323020 is a wasteful number, since it uses less digits than its factorization.

1002320323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150498599 (or 150498594 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 1002320323020 its reverse (203230232001), we get a palindrome (1205550555021).

The spelling of 1002320323020 in words is "one trillion, two billion, three hundred twenty million, three hundred twenty-three thousand, twenty".