10311031321020 has 72 divisors (see below), whose sum is σ = 31586466300480. Its totient is φ = 2722384502400.

The previous prime is 10311031321001. The next prime is 10311031321039. The reversal of 10311031321020 is 2012313011301.

10311031321020 is a `hidden beast` number, since 1 + 0 + 311 + 0 + 31 + 321 + 0 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (10311031321001) and next prime (10311031321039).

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 = 10311031320984 and 10311031321002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283563540 + ... + 283599899.

It is an arithmetic number, because the mean of its divisors is an integer number (438700920840).

Almost surely, 2^{10311031321020} is an apocalyptic number.

10311031321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10311031321020 is an abundant number, since it is smaller than the sum of its proper divisors (21275434979460).

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

10311031321020 is a wasteful number, since it uses less digits than its factorization.

10311031321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567163555 (or 567163550 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 10311031321020 its reverse (2012313011301), we get a palindrome (12323344332321).

The spelling of 10311031321020 in words is "ten trillion, three hundred eleven billion, thirty-one million, three hundred twenty-one thousand, twenty".