31212103102002 has 12 divisors (see below), whose sum is σ = 67626223387710. Its totient is φ = 10404034367328.

The previous prime is 31212103101997. The next prime is 31212103102003. The reversal of 31212103102002 is 20020130121213.

31212103102002 is a `hidden beast` number, since 3 + 121 + 210 + 310 + 20 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17602799233761 + 13609303868241 = 4195569^2 + 3689079^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1734005727889 = 31212103102002 / (3 + 1 + 2 + 1 + 2 + 1 + 0 + 3 + 1 + 0 + 2 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (31212103102003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 867002863927 + ... + 867002863962.

Almost surely, 2^{31212103102002} is an apocalyptic number.

31212103102002 is an abundant number, since it is smaller than the sum of its proper divisors (36414120285708).

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

31212103102002 is a wasteful number, since it uses less digits than its factorization.

31212103102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734005727897 (or 1734005727894 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31212103102002 its reverse (20020130121213), we get a palindrome (51232233223215).

The spelling of 31212103102002 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred two thousand, two".