123105523 has 2 divisors, whose sum is σ = 123105524. Its totient is φ = 123105522.

The previous prime is 123105511. The next prime is 123105529. The reversal of 123105523 is 325501321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123105523 - 2⁵ = 123105491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123105494 and 123105503.

It is not a weakly prime, because it can be changed into another prime (123105529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61552761 + 61552762.

It is an arithmetic number, because the mean of its divisors is an integer number (61552762).

Almost surely, 2^123105523 is an apocalyptic number.

123105523 is a deficient number, since it is larger than the sum of its proper divisors (1).

123105523 is an equidigital number, since it uses as much as digits as its factorization.

123105523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 123105523 is about 11095.2928307458. The cubic root of 123105523 is about 497.4611610800.

Adding to 123105523 its reverse (325501321), we get a palindrome (448606844).

The spelling of 123105523 in words is "one hundred twenty-three million, one hundred five thousand, five hundred twenty-three".