123351 has 4 divisors (see below), whose sum is σ = 164472. Its totient is φ = 82232.

The previous prime is 123341. The next prime is 123373. The reversal of 123351 is 153321.

It is a happy number.

123351 is nontrivially palindromic in base 11.

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 123351 - 2⁹ = 122839 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 123351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20556 + ... + 20561.

It is an arithmetic number, because the mean of its divisors is an integer number (41118).

2¹²³³⁵¹ is an apocalyptic number.

123351 is a deficient number, since it is larger than the sum of its proper divisors (41121).

123351 is an equidigital number, since it uses as much as digits as its factorization.

123351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41120.

The product of its digits is 90, while the sum is 15.

The square root of 123351 is about 351.2136102146. The cubic root of 123351 is about 49.7791593576.

Adding to 123351 its reverse (153321), we get a palindrome (276672).

It can be divided in two parts, 123 and 351, that added together give a palindrome (474).

The spelling of 123351 in words is "one hundred twenty-three thousand, three hundred fifty-one".