12213031 has 8 divisors (see below), whose sum is σ = 12722400. Its totient is φ = 11709600.

The previous prime is 12213017. The next prime is 12213037. The reversal of 12213031 is 13031221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12213031 - 2¹¹ = 12210983 is a prime.

It is a super-2 number, since 2×12213031² = 298316252413922, 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 (12213037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2985 + ... + 5773.

It is an arithmetic number, because the mean of its divisors is an integer number (1590300).

Almost surely, 2^12213031 is an apocalyptic number.

12213031 is a deficient number, since it is larger than the sum of its proper divisors (509369).

12213031 is a wasteful number, since it uses less digits than its factorization.

12213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12213031 is about 3494.7147236935. The cubic root of 12213031 is about 230.2896853971.

Adding to 12213031 its reverse (13031221), we get a palindrome (25244252).

The spelling of 12213031 in words is "twelve million, two hundred thirteen thousand, thirty-one".