10231320310020 has 120 divisors (see below), whose sum is σ = 32535702780504. Its totient is φ = 2690977365504.

The previous prime is 10231320309997. The next prime is 10231320310039. The reversal of 10231320310020 is 2001302313201.

10231320310020 is a `hidden beast` number, since 1 + 0 + 2 + 31 + 320 + 310 + 0 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 230647746564 + 10000672563456 = 480258^2 + 3162384^2 .

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 = 10231320309975 and 10231320310002.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43139479 + ... + 43375998.

Almost surely, 2^{10231320310020} is an apocalyptic number.

10231320310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10231320310020 is an abundant number, since it is smaller than the sum of its proper divisors (22304382470484).

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

10231320310020 is a wasteful number, since it uses less digits than its factorization.

10231320310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86515571 (or 86515560 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 10231320310020 its reverse (2001302313201), we get a palindrome (12232622623221).

The spelling of 10231320310020 in words is "ten trillion, two hundred thirty-one billion, three hundred twenty million, three hundred ten thousand, twenty".