13423501 has 18 divisors (see below), whose sum is σ = 16919082. Its totient is φ = 10614240.

The previous prime is 13423499. The next prime is 13423511. The reversal of 13423501 is 10532431.

It can be written as a sum of positive squares in 3 ways, for example, as 275625 + 13147876 = 525^2 + 3626^2 .

It is not a de Polignac number, because 13423501 - 2¹ = 13423499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423511) 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 in 17 ways as a sum of consecutive naturals, for example, 7471 + ... + 9091.

It is an arithmetic number, because the mean of its divisors is an integer number (939949).

Almost surely, 2^13423501 is an apocalyptic number.

It is an amenable number.

13423501 is a deficient number, since it is larger than the sum of its proper divisors (3495581).

13423501 is a wasteful number, since it uses less digits than its factorization.

13423501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1641 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13423501 is about 3663.8096293339. The cubic root of 13423501 is about 237.6595478272.

Adding to 13423501 its reverse (10532431), we get a palindrome (23955932).

It can be divided in two parts, 13423 and 501, that added together give a square (13924 = 118²).

The spelling of 13423501 in words is "thirteen million, four hundred twenty-three thousand, five hundred one".