422720578931 has 8 divisors (see below), whose sum is σ = 485612391264. Its totient is φ = 360454556160.

The previous prime is 422720578913. The next prime is 422720578939. The reversal of 422720578931 is 139875027224.

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 422720578931 - 2⁶ = 422720578867 is a prime.

It is a super-2 number, since 2×422720578931² (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 422720578931.

It is not an unprimeable number, because it can be changed into a prime (422720578939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156445940 + ... + 156448641.

It is an arithmetic number, because the mean of its divisors is an integer number (60701548908).

Almost surely, 2^422720578931 is an apocalyptic number.

422720578931 is a deficient number, since it is larger than the sum of its proper divisors (62891812333).

422720578931 is a wasteful number, since it uses less digits than its factorization.

422720578931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312894781.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 422720578931 in words is "four hundred twenty-two billion, seven hundred twenty million, five hundred seventy-eight thousand, nine hundred thirty-one".