31020303012020 has 24 divisors (see below), whose sum is σ = 74448727229184. Its totient is φ = 10635532461216.

The previous prime is 31020303011983. The next prime is 31020303012029. The reversal of 31020303012020 is 2021030302013.

It is a self number, because there is not a number n which added to its sum of digits gives 31020303012020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020303012029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110786796332 + ... + 110786796611.

It is an arithmetic number, because the mean of its divisors is an integer number (3102030301216).

Almost surely, 2^{31020303012020} is an apocalyptic number.

It is an amenable number.

31020303012020 is an abundant number, since it is smaller than the sum of its proper divisors (43428424217164).

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

31020303012020 is a wasteful number, since it uses less digits than its factorization.

31020303012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221573592959 (or 221573592957 counting only the distinct ones).

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

Adding to 31020303012020 its reverse (2021030302013), we get a palindrome (33041333314033).

The spelling of 31020303012020 in words is "thirty-one trillion, twenty billion, three hundred three million, twelve thousand, twenty".