123521323 has 4 divisors (see below), whose sum is σ = 125851968. Its totient is φ = 121190680.

The previous prime is 123521309. The next prime is 123521357. The reversal of 123521323 is 323125321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323125321 = 23 ⋅14048927.

It is a cyclic number.

It is not a de Polignac number, because 123521323 - 2⁵ = 123521291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123521294 and 123521303.

It is not an unprimeable number, because it can be changed into a prime (123521423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165243 + ... + 1165348.

It is an arithmetic number, because the mean of its divisors is an integer number (31462992).

Almost surely, 2^123521323 is an apocalyptic number.

123521323 is a deficient number, since it is larger than the sum of its proper divisors (2330645).

123521323 is an equidigital number, since it uses as much as digits as its factorization.

123521323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330644.

The product of its digits is 1080, while the sum is 22.

The square root of 123521323 is about 11114.0147111654. The cubic root of 123521323 is about 498.0206049979.

Adding to 123521323 its reverse (323125321), we get a palindrome (446646644).

The spelling of 123521323 in words is "one hundred twenty-three million, five hundred twenty-one thousand, three hundred twenty-three".