1320231331206 has 24 divisors (see below), whose sum is σ = 2860748541144. Its totient is φ = 440039060640.

The previous prime is 1320231331169. The next prime is 1320231331213. The reversal of 1320231331206 is 6021331320231.

1320231331206 is a `hidden beast` number, since 1 + 32 + 0 + 2 + 313 + 312 + 0 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1320231331206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2956455 + ... + 3373586.

It is an arithmetic number, because the mean of its divisors is an integer number (119197855881).

Almost surely, 2^{1320231331206} is an apocalyptic number.

1320231331206 is an abundant number, since it is smaller than the sum of its proper divisors (1540517209938).

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

1320231331206 is a wasteful number, since it uses less digits than its factorization.

1320231331206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341636 (or 6341633 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 1320231331206 its reverse (6021331320231), we get a palindrome (7341562651437).

The spelling of 1320231331206 in words is "one trillion, three hundred twenty billion, two hundred thirty-one million, three hundred thirty-one thousand, two hundred six".