229311565173 has 12 divisors (see below), whose sum is σ = 345629026080. Its totient is φ = 146227664616.

The previous prime is 229311565037. The next prime is 229311565243. The reversal of 229311565173 is 371565113922.

229311565173 is a `hidden beast` number, since 2 + 2 + 9 + 3 + 11 + 565 + 1 + 73 = 666.

It is not a de Polignac number, because 229311565173 - 2⁸ = 229311564917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229311565673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 553892463 + ... + 553892876.

It is an arithmetic number, because the mean of its divisors is an integer number (28802418840).

Almost surely, 2^229311565173 is an apocalyptic number.

229311565173 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

229311565173 is a deficient number, since it is larger than the sum of its proper divisors (116317460907).

229311565173 is a wasteful number, since it uses less digits than its factorization.

229311565173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107785368 (or 1107785365 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The spelling of 229311565173 in words is "two hundred twenty-nine billion, three hundred eleven million, five hundred sixty-five thousand, one hundred seventy-three".