1231330302020 has 96 divisors (see below), whose sum is σ = 3182822361600. Its totient is φ = 389658138624.

The previous prime is 1231330302011. The next prime is 1231330302043. The reversal of 1231330302020 is 202030331321.

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 = 1231330301983 and 1231330302001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23486396 + ... + 23538764.

It is an arithmetic number, because the mean of its divisors is an integer number (33154399600).

Almost surely, 2^{1231330302020} is an apocalyptic number.

1231330302020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231330302020 is an abundant number, since it is smaller than the sum of its proper divisors (1951492059580).

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

1231330302020 is a wasteful number, since it uses less digits than its factorization.

1231330302020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65317 (or 65315 counting only the distinct ones).

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

Adding to 1231330302020 its reverse (202030331321), we get a palindrome (1433360633341).

The spelling of 1231330302020 in words is "one trillion, two hundred thirty-one billion, three hundred thirty million, three hundred two thousand, twenty".