12913123 has 2 divisors, whose sum is σ = 12913124. Its totient is φ = 12913122.

The previous prime is 12913039. The next prime is 12913127. The reversal of 12913123 is 32131921.

12913123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12913123 is a prime.

It is a super-2 number, since 2×12913123² = 333497491226258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12913094 and 12913103.

It is not a weakly prime, because it can be changed into another prime (12913127) 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 as a sum of consecutive naturals, namely, 6456561 + 6456562.

It is an arithmetic number, because the mean of its divisors is an integer number (6456562).

Almost surely, 2^12913123 is an apocalyptic number.

12913123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12913123 is an equidigital number, since it uses as much as digits as its factorization.

12913123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 22.

The square root of 12913123 is about 3593.4834075031. The cubic root of 12913123 is about 234.6085106924.

It can be divided in two parts, 1291312 and 3, that multiplied together give a triangular number (3873936 = T₂₇₈₃).

The spelling of 12913123 in words is "twelve million, nine hundred thirteen thousand, one hundred twenty-three".