31020323012020 has 96 divisors (see below), whose sum is σ = 73283394280320. Its totient is φ = 10960196751360.

The previous prime is 31020323011981. The next prime is 31020323012057. The reversal of 31020323012020 is 2021032302013.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 21747601 + ... + 23130040.

It is an arithmetic number, because the mean of its divisors is an integer number (763368690420).

Almost surely, 2^{31020323012020} is an apocalyptic number.

It is an amenable number.

31020323012020 is an abundant number, since it is smaller than the sum of its proper divisors (42263071268300).

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

31020323012020 is a wasteful number, since it uses less digits than its factorization.

31020323012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44877793 (or 44877791 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31020323012020 its reverse (2021032302013), we get a palindrome (33041355314033).

The spelling of 31020323012020 in words is "thirty-one trillion, twenty billion, three hundred twenty-three million, twelve thousand, twenty".