223170263281 has 45 divisors (see below), whose sum is σ = 269886906969. Its totient is φ = 184522955400.

The previous prime is 223170263227. The next prime is 223170263291. The reversal of 223170263281 is 182362071322.

The square root of 223170263281 is 472409.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 223170263281 - 2¹⁷ = 223170132209 is a prime.

It is a super-3 number, since 3×223170263281³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223170263281.

It is not an unprimeable number, because it can be changed into a prime (223170263221) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 717589116 + ... + 717589426.

Almost surely, 2^223170263281 is an apocalyptic number.

223170263281 is the 472409-th square number.

223170263281 is the 236205-th centered octagonal number.

It is an amenable number.

223170263281 is a deficient number, since it is larger than the sum of its proper divisors (46716643688).

223170263281 is an frugal number, since it uses more digits than its factorization.

223170263281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 223170263281 in words is "two hundred twenty-three billion, one hundred seventy million, two hundred sixty-three thousand, two hundred eighty-one".