1231530302020 has 24 divisors (see below), whose sum is σ = 2698657706304. Its totient is φ = 471194202336.

The previous prime is 1231530302011. The next prime is 1231530302059. The reversal of 1231530302020 is 202030351321.

It is a junction number, because it is equal to n+sod(n) for n = 1231530301982 and 1231530302000.

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, 1338619434 + ... + 1338620353.

It is an arithmetic number, because the mean of its divisors is an integer number (112444071096).

Almost surely, 2^{1231530302020} is an apocalyptic number.

1231530302020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231530302020 is an abundant number, since it is smaller than the sum of its proper divisors (1467127404284).

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

1231530302020 is a wasteful number, since it uses less digits than its factorization.

1231530302020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677239819 (or 2677239817 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 1231530302020 its reverse (202030351321), we get a palindrome (1433560653341).

The spelling of 1231530302020 in words is "one trillion, two hundred thirty-one billion, five hundred thirty million, three hundred two thousand, twenty".