31212202332020 has 12 divisors (see below), whose sum is σ = 65545624897284. Its totient is φ = 12484880932800.

The previous prime is 31212202332019. The next prime is 31212202332029. The reversal of 31212202332020 is 2023320221213.

It can be written as a sum of positive squares in 2 ways, for example, as 19261934100964 + 11950268231056 = 4388842^2 + 3456916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212202332029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780305058281 + ... + 780305058320.

It is an arithmetic number, because the mean of its divisors is an integer number (5462135408107).

Almost surely, 2^{31212202332020} is an apocalyptic number.

It is an amenable number.

31212202332020 is an abundant number, since it is smaller than the sum of its proper divisors (34333422565264).

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

31212202332020 is a wasteful number, since it uses less digits than its factorization.

31212202332020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560610116610 (or 1560610116608 counting only the distinct ones).

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

Adding to 31212202332020 its reverse (2023320221213), we get a palindrome (33235522553233).

The spelling of 31212202332020 in words is "thirty-one trillion, two hundred twelve billion, two hundred two million, three hundred thirty-two thousand, twenty".