12731923 has 2 divisors, whose sum is σ = 12731924. Its totient is φ = 12731922.

The previous prime is 12731921. The next prime is 12731941. The reversal of 12731923 is 32913721.

It is a weak prime.

It is an emirp because it is prime and its reverse (32913721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12731923 - 2¹ = 12731921 is a prime.

It is a super-3 number, since 3×12731923³ (a number of 22 digits) contains 333 as substring.

Together with 12731921, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12731891 and 12731900.

It is not a weakly prime, because it can be changed into another prime (12731921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365961 + 6365962.

It is an arithmetic number, because the mean of its divisors is an integer number (6365962).

Almost surely, 2^12731923 is an apocalyptic number.

12731923 is a deficient number, since it is larger than the sum of its proper divisors (1).

12731923 is an equidigital number, since it uses as much as digits as its factorization.

12731923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 12731923 is about 3568.1820301100. The cubic root of 12731923 is about 233.5059767647.

The spelling of 12731923 in words is "twelve million, seven hundred thirty-one thousand, nine hundred twenty-three".