1023202012320 has 72 divisors (see below), whose sum is σ = 3491676871956. Its totient is φ = 272853869568.

The previous prime is 1023202012309. The next prime is 1023202012321. The reversal of 1023202012320 is 232102023201.

1023202012320 is a `hidden beast` number, since 1 + 0 + 2 + 320 + 20 + 1 + 2 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 966296864016 + 56905148304 = 983004^2 + 238548^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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 = 1023202012293 and 1023202012302.

It is not an unprimeable number, because it can be changed into a prime (1023202012321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355277037 + ... + 355279916.

Almost surely, 2^{1023202012320} is an apocalyptic number.

1023202012320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023202012320 is an abundant number, since it is smaller than the sum of its proper divisors (2468474859636).

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

1023202012320 is a wasteful number, since it uses less digits than its factorization.

1023202012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710556974 (or 710556963 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1023202012320 its reverse (232102023201), we get a palindrome (1255304035521).

The spelling of 1023202012320 in words is "one trillion, twenty-three billion, two hundred two million, twelve thousand, three hundred twenty".