12031356 has 24 divisors (see below), whose sum is σ = 28249984. Its totient is φ = 3985200.

The previous prime is 12031343. The next prime is 12031373. The reversal of 12031356 is 65313021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120 + ... + 5031.

Almost surely, 2^12031356 is an apocalyptic number.

It is an amenable number.

12031356 is an abundant number, since it is smaller than the sum of its proper divisors (16218628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12031356 is a wasteful number, since it uses less digits than its factorization.

12031356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321 (or 6319 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 12031356 is about 3468.6245112436. The cubic root of 12031356 is about 229.1420842980.

Adding to 12031356 its reverse (65313021), we get a palindrome (77344377).

The spelling of 12031356 in words is "twelve million, thirty-one thousand, three hundred fifty-six".