231718450322 has 6 divisors (see below), whose sum is σ = 347578696629. Its totient is φ = 115858884780.

The previous prime is 231718450321. The next prime is 231718450363. The reversal of 231718450322 is 223054817132.

It can be written as a sum of positive squares in 2 ways, for example, as 231275389921 + 443060401 = 480911^2 + 21049^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=340381.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231718450321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 510572 + ... + 850952.

Almost surely, 2^231718450322 is an apocalyptic number.

231718450322 is a deficient number, since it is larger than the sum of its proper divisors (115860246307).

231718450322 is an frugal number, since it uses more digits than its factorization.

231718450322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680764 (or 340383 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 231718450322 in words is "two hundred thirty-one billion, seven hundred eighteen million, four hundred fifty thousand, three hundred twenty-two".