123151 has 8 divisors (see below), whose sum is σ = 143264. Its totient is φ = 103680.

The previous prime is 123143. The next prime is 123169. The reversal of 123151 is 151321.

123151 is nontrivially palindromic in base 2.

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

It is a 8-Lehmer number, since φ(123151) divides (123151-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 123151 - 2³ = 123143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121) 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, 391 + ... + 631.

It is an arithmetic number, because the mean of its divisors is an integer number (17908).

2¹²³¹⁵¹ is an apocalyptic number.

123151 is a deficient number, since it is larger than the sum of its proper divisors (20113).

123151 is an equidigital number, since it uses as much as digits as its factorization.

123151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its digits is 30, while the sum is 13.

The square root of 123151 is about 350.9287677008. The cubic root of 123151 is about 49.7522410041.

Adding to 123151 its reverse (151321), we get a palindrome (274472).

The spelling of 123151 in words is "one hundred twenty-three thousand, one hundred fifty-one".