320131983981 has 8 divisors (see below), whose sum is σ = 428543214624. Its totient is φ = 212571038000.

The previous prime is 320131983979. The next prime is 320131984001. The reversal of 320131983981 is 189389131023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320131983981 - 2¹ = 320131983979 is a prime.

It is a super-2 number, since 2×320131983981² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320131983981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131983961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212570286 + ... + 212571791.

It is an arithmetic number, because the mean of its divisors is an integer number (53567901828).

Almost surely, 2^320131983981 is an apocalyptic number.

It is an amenable number.

320131983981 is a deficient number, since it is larger than the sum of its proper divisors (108411230643).

320131983981 is a wasteful number, since it uses less digits than its factorization.

320131983981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425142331.

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 320131983981 in words is "three hundred twenty billion, one hundred thirty-one million, nine hundred eighty-three thousand, nine hundred eighty-one".