31323100020020 has 96 divisors (see below), whose sum is σ = 69299943552000. Its totient is φ = 11859627377664.

The previous prime is 31323100019987. The next prime is 31323100020031. The reversal of 31323100020020 is 2002000132313.

31323100020020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×31323100020020² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 2531562554 + ... + 2531574926.

It is an arithmetic number, because the mean of its divisors is an integer number (721874412000).

Almost surely, 2^{31323100020020} is an apocalyptic number.

It is an amenable number.

31323100020020 is an abundant number, since it is smaller than the sum of its proper divisors (37976843531980).

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

31323100020020 is a wasteful number, since it uses less digits than its factorization.

31323100020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17577 (or 17575 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31323100020020 its reverse (2002000132313), we get a palindrome (33325100152333).

The spelling of 31323100020020 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred million, twenty thousand, twenty".