12961423 has 2 divisors, whose sum is σ = 12961424. Its totient is φ = 12961422.

The previous prime is 12961393. The next prime is 12961457. The reversal of 12961423 is 32416921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12961423 - 2⁹ = 12960911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12961391 and 12961400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12961483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6480711 + 6480712.

It is an arithmetic number, because the mean of its divisors is an integer number (6480712).

Almost surely, 2^12961423 is an apocalyptic number.

12961423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12961423 is an equidigital number, since it uses as much as digits as its factorization.

12961423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 12961423 is about 3600.1976334640. The cubic root of 12961423 is about 234.9006551565.

The spelling of 12961423 in words is "twelve million, nine hundred sixty-one thousand, four hundred twenty-three".