431326055313220 has 96 divisors (see below), whose sum is σ = 954737142559200. Its totient is φ = 163431402860544.

The previous prime is 431326055313217. The next prime is 431326055313253. The reversal of 431326055313220 is 22313550623134.

It can be written as a sum of positive squares in 16 ways, for example, as 1827952672324 + 429498102640896 = 1352018^2 + 20724336^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 790267776 + ... + 790813384.

It is an arithmetic number, because the mean of its divisors is an integer number (9945178568325).

Almost surely, 2^{431326055313220} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431326055313220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477368571279600).

431326055313220 is an abundant number, since it is smaller than the sum of its proper divisors (523411087245980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431326055313220 is a wasteful number, since it uses less digits than its factorization.

431326055313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571417 (or 571415 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 40.

The spelling of 431326055313220 in words is "four hundred thirty-one trillion, three hundred twenty-six billion, fifty-five million, three hundred thirteen thousand, two hundred twenty".