223961247 has 16 divisors (see below), whose sum is σ = 351312480. Its totient is φ = 140524416.

The previous prime is 223961239. The next prime is 223961249. The reversal of 223961247 is 742169322.

223961247 is a `hidden beast` number, since 2 + 2 + 39 + 612 + 4 + 7 = 666.

It is not a de Polignac number, because 223961247 - 2³ = 223961239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223961249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243508 + ... + 244425.

It is an arithmetic number, because the mean of its divisors is an integer number (21957030).

Almost surely, 2^223961247 is an apocalyptic number.

223961247 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

223961247 is a deficient number, since it is larger than the sum of its proper divisors (127351233).

223961247 is a wasteful number, since it uses less digits than its factorization.

223961247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487959 (or 487953 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 223961247 is about 14965.3348442325. The cubic root of 223961247 is about 607.2827694587.

The spelling of 223961247 in words is "two hundred twenty-three million, nine hundred sixty-one thousand, two hundred forty-seven".