13123081 has 2 divisors, whose sum is σ = 13123082. Its totient is φ = 13123080.

The previous prime is 13123079. The next prime is 13123111. The reversal of 13123081 is 18032131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12313081 + 810000 = 3509^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 13123081 - 2¹ = 13123079 is a prime.

It is a super-2 number, since 2×13123081² = 344430509865122, which contains 22 as substring.

Together with 13123079, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13123021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561540 + 6561541.

It is an arithmetic number, because the mean of its divisors is an integer number (6561541).

Almost surely, 2^13123081 is an apocalyptic number.

It is an amenable number.

13123081 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123081 is an equidigital number, since it uses as much as digits as its factorization.

13123081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 13123081 is about 3622.5793297042. The cubic root of 13123081 is about 235.8732022590.

The spelling of 13123081 in words is "thirteen million, one hundred twenty-three thousand, eighty-one".