320427131278 has 8 divisors (see below), whose sum is σ = 480643810272. Its totient is φ = 160212527856.

The previous prime is 320427131257. The next prime is 320427131281. The reversal of 320427131278 is 872131724023.

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

It is a self number, because there is not a number n which added to its sum of digits gives 320427131278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47175 + ... + 801922.

It is an arithmetic number, because the mean of its divisors is an integer number (60080476284).

Almost surely, 2^320427131278 is an apocalyptic number.

320427131278 is a deficient number, since it is larger than the sum of its proper divisors (160216678994).

320427131278 is a wasteful number, since it uses less digits than its factorization.

320427131278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037786.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 320427131278 in words is "three hundred twenty billion, four hundred twenty-seven million, one hundred thirty-one thousand, two hundred seventy-eight".