12356 has 6 divisors (see below), whose sum is σ = 21630. Its totient is φ = 6176.

The previous prime is 12347. The next prime is 12373. The reversal of 12356 is 65321.

It can be written as a sum of positive squares in only one way, i.e., 12100 + 256 = 110^2 + 16^2 .

It is a fibodiv number, since the Fibonacci-like sequence with seeds 12 and 356 contains 12356 itself.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1541 + ... + 1548.

It is an arithmetic number, because the mean of its divisors is an integer number (3605).

2¹²³⁵⁶ is an apocalyptic number.

It is an amenable number.

12356 is a deficient number, since it is larger than the sum of its proper divisors (9274).

12356 is a wasteful number, since it uses less digits than its factorization.

12356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093 (or 3091 counting only the distinct ones).

The product of its digits is 180, while the sum is 17.

The square root of 12356 is about 111.1575458527. The cubic root of 12356 is about 23.1184812403.

Adding to 12356 its reverse (65321), we get a palindrome (77677).

The spelling of 12356 in words is "twelve thousand, three hundred fifty-six".