3131220304206 has 64 divisors (see below), whose sum is σ = 7167241213440. Its totient is φ = 1012715524800.

The previous prime is 3131220304133. The next prime is 3131220304211. The reversal of 3131220304206 is 6024030221313.

3131220304206 is a `hidden beast` number, since 3 + 1 + 31 + 2 + 203 + 0 + 420 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 3131220304206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4114615 + ... + 4815858.

It is an arithmetic number, because the mean of its divisors is an integer number (111988143960).

Almost surely, 2^{3131220304206} is an apocalyptic number.

3131220304206 is an abundant number, since it is smaller than the sum of its proper divisors (4036020909234).

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

3131220304206 is a wasteful number, since it uses less digits than its factorization.

3131220304206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8930678 (or 8930672 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 3131220304206 its reverse (6024030221313), we get a palindrome (9155250525519).

The spelling of 3131220304206 in words is "three trillion, one hundred thirty-one billion, two hundred twenty million, three hundred four thousand, two hundred six".