31101233012020 has 12 divisors (see below), whose sum is σ = 65312589325284. Its totient is φ = 12440493204800.

The previous prime is 31101233012009. The next prime is 31101233012029. The reversal of 31101233012020 is 2021033210113.

It can be written as a sum of positive squares in 2 ways, for example, as 15550293144996 + 15550939867024 = 3943386^2 + 3943468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31101233012029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777530825281 + ... + 777530825320.

It is an arithmetic number, because the mean of its divisors is an integer number (5442715777107).

Almost surely, 2^{31101233012020} is an apocalyptic number.

It is an amenable number.

31101233012020 is an abundant number, since it is smaller than the sum of its proper divisors (34211356313264).

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

31101233012020 is a wasteful number, since it uses less digits than its factorization.

31101233012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555061650610 (or 1555061650608 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31101233012020 its reverse (2021033210113), we get a palindrome (33122266222133).

The spelling of 31101233012020 in words is "thirty-one trillion, one hundred one billion, two hundred thirty-three million, twelve thousand, twenty".