123356 has 6 divisors (see below), whose sum is σ = 215880. Its totient is φ = 61676.

The previous prime is 123341. The next prime is 123373. The reversal of 123356 is 653321.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

123356 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15416 + ... + 15423.

It is an arithmetic number, because the mean of its divisors is an integer number (35980).

2¹²³³⁵⁶ is an apocalyptic number.

It is an amenable number.

123356 is a deficient number, since it is larger than the sum of its proper divisors (92524).

123356 is a wasteful number, since it uses less digits than its factorization.

123356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30843 (or 30841 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 123356 is about 351.2207283177. The cubic root of 123356 is about 49.7798319435.

Adding to 123356 its reverse (653321), we get a palindrome (776677).

The spelling of 123356 in words is "one hundred twenty-three thousand, three hundred fifty-six".