13223871 has 16 divisors (see below), whose sum is σ = 19962720. Its totient is φ = 8648640.

The previous prime is 13223863. The next prime is 13223879. The reversal of 13223871 is 17832231.

It is an interprime number because it is at equal distance from previous prime (13223863) and next prime (13223879).

It is not a de Polignac number, because 13223871 - 2³ = 13223863 is a prime.

It is a super-3 number, since 3×13223871³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223879) 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, 3190 + ... + 6051.

It is an arithmetic number, because the mean of its divisors is an integer number (1247670).

Almost surely, 2^13223871 is an apocalyptic number.

13223871 is a deficient number, since it is larger than the sum of its proper divisors (6738849).

13223871 is an equidigital number, since it uses as much as digits as its factorization.

13223871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303 (or 9297 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 13223871 is about 3636.4640792946. The cubic root of 13223871 is about 236.4755266420.

The spelling of 13223871 in words is "thirteen million, two hundred twenty-three thousand, eight hundred seventy-one".