31212020032002 has 40 divisors (see below), whose sum is σ = 71123435499600. Its totient is φ = 10227667577976.

The previous prime is 31212020031977. The next prime is 31212020032033. The reversal of 31212020032002 is 20023002021213.

31212020032002 is a `hidden beast` number, since 3 + 121 + 20 + 200 + 320 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1632759852 + ... + 1632778967.

It is an arithmetic number, because the mean of its divisors is an integer number (1778085887490).

Almost surely, 2^{31212020032002} is an apocalyptic number.

31212020032002 is an abundant number, since it is smaller than the sum of its proper divisors (39911415467598).

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

31212020032002 is a wasteful number, since it uses less digits than its factorization.

31212020032002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265538892 (or 3265538883 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31212020032002 its reverse (20023002021213), we get a palindrome (51235022053215).

The spelling of 31212020032002 in words is "thirty-one trillion, two hundred twelve billion, twenty million, thirty-two thousand, two".