1231313033020 has 24 divisors (see below), whose sum is σ = 2955151279584. Its totient is φ = 422164468416.

The previous prime is 1231313032883. The next prime is 1231313033039. The reversal of 1231313033020 is 203303131321.

It is a super-2 number, since 2×1231313033020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231313032982 and 1231313033000.

It is a congruent number.

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, 4397546407 + ... + 4397546686.

It is an arithmetic number, because the mean of its divisors is an integer number (123131303316).

Almost surely, 2^{1231313033020} is an apocalyptic number.

1231313033020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231313033020 is an abundant number, since it is smaller than the sum of its proper divisors (1723838246564).

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

1231313033020 is a wasteful number, since it uses less digits than its factorization.

1231313033020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8795093109 (or 8795093107 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 1231313033020 its reverse (203303131321), we get a palindrome (1434616164341).

The spelling of 1231313033020 in words is "one trillion, two hundred thirty-one billion, three hundred thirteen million, thirty-three thousand, twenty".