320131220001 has 32 divisors (see below), whose sum is σ = 454083801600. Its totient is φ = 200047760640.

The previous prime is 320131219997. The next prime is 320131220009. The reversal of 320131220001 is 100022131023.

It is not a de Polignac number, because 320131220001 - 2² = 320131219997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320131220009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2452770 + ... + 2579988.

It is an arithmetic number, because the mean of its divisors is an integer number (14190118800).

Almost surely, 2^320131220001 is an apocalyptic number.

It is an amenable number.

320131220001 is a deficient number, since it is larger than the sum of its proper divisors (133952581599).

320131220001 is a wasteful number, since it uses less digits than its factorization.

320131220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127709.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 320131220001 its reverse (100022131023), we get a palindrome (420153351024).

The spelling of 320131220001 in words is "three hundred twenty billion, one hundred thirty-one million, two hundred twenty thousand, one".