31201222332020 has 48 divisors (see below), whose sum is σ = 70576956450000. Its totient is φ = 11518134245376.

The previous prime is 31201222332013. The next prime is 31201222332143. The reversal of 31201222332020 is 2023322210213.

It can be written as a sum of positive squares in 8 ways, for example, as 6232152759184 + 24969069572836 = 2496428^2 + 4996906^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10772645 + ... + 13358604.

It is an arithmetic number, because the mean of its divisors is an integer number (1470353259375).

Almost surely, 2^{31201222332020} is an apocalyptic number.

It is an amenable number.

31201222332020 is an abundant number, since it is smaller than the sum of its proper divisors (39375734117980).

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

31201222332020 is a wasteful number, since it uses less digits than its factorization.

31201222332020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24136244 (or 24136242 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31201222332020 its reverse (2023322210213), we get a palindrome (33224544542233).

The spelling of 31201222332020 in words is "thirty-one trillion, two hundred one billion, two hundred twenty-two million, three hundred thirty-two thousand, twenty".