13031723 has 2 divisors, whose sum is σ = 13031724. Its totient is φ = 13031722.

The previous prime is 13031719. The next prime is 13031771. The reversal of 13031723 is 32713031.

It is a happy number.

13031723 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13031723 - 2² = 13031719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13031695 and 13031704.

It is not a weakly prime, because it can be changed into another prime (13031783) 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, 6515861 + 6515862.

It is an arithmetic number, because the mean of its divisors is an integer number (6515862).

Almost surely, 2^13031723 is an apocalyptic number.

13031723 is a deficient number, since it is larger than the sum of its proper divisors (1).

13031723 is an equidigital number, since it uses as much as digits as its factorization.

13031723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 13031723 is about 3609.9477835559. The cubic root of 13031723 is about 235.3245733849.

Adding to 13031723 its reverse (32713031), we get a palindrome (45744754).

The spelling of 13031723 in words is "thirteen million, thirty-one thousand, seven hundred twenty-three".