1328881031206 has 4 divisors (see below), whose sum is σ = 1993321546812. Its totient is φ = 664440515602.

The previous prime is 1328881031189. The next prime is 1328881031237. The reversal of 1328881031206 is 6021301888231.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332220257800 + ... + 332220257803.

It is an arithmetic number, because the mean of its divisors is an integer number (498330386703).

Almost surely, 2^{1328881031206} is an apocalyptic number.

1328881031206 is a deficient number, since it is larger than the sum of its proper divisors (664440515606).

1328881031206 is an equidigital number, since it uses as much as digits as its factorization.

1328881031206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664440515605.

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 1328881031206 in words is "one trillion, three hundred twenty-eight billion, eight hundred eighty-one million, thirty-one thousand, two hundred six".