12208031 has 4 divisors (see below), whose sum is σ = 13317864. Its totient is φ = 11098200.

The previous prime is 12208019. The next prime is 12208033. The reversal of 12208031 is 13080221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12208031 - 2¹⁰ = 12207007 is a prime.

It is a super-2 number, since 2×12208031² = 298072041793922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12208033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554900 + ... + 554921.

It is an arithmetic number, because the mean of its divisors is an integer number (3329466).

Almost surely, 2^12208031 is an apocalyptic number.

12208031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12208031 is a deficient number, since it is larger than the sum of its proper divisors (1109833).

12208031 is a wasteful number, since it uses less digits than its factorization.

12208031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109832.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12208031 is about 3493.9992844876. Note that the first 3 decimals coincide. The cubic root of 12208031 is about 230.2582543353.

Adding to 12208031 its reverse (13080221), we get a palindrome (25288252).

The spelling of 12208031 in words is "twelve million, two hundred eight thousand, thirty-one".