13013405 has 4 divisors (see below), whose sum is σ = 15616092. Its totient is φ = 10410720.

The previous prime is 13013393. The next prime is 13013417. The reversal of 13013405 is 50431031.

13013405 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13013393) and next prime (13013417).

It can be written as a sum of positive squares in 2 ways, for example, as 1473796 + 11539609 = 1214^2 + 3397^2 .

It is not a de Polignac number, because 13013405 - 2⁴ = 13013389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301336 + ... + 1301345.

It is an arithmetic number, because the mean of its divisors is an integer number (3904023).

Almost surely, 2^13013405 is an apocalyptic number.

It is an amenable number.

13013405 is a deficient number, since it is larger than the sum of its proper divisors (2602687).

13013405 is an equidigital number, since it uses as much as digits as its factorization.

13013405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602686.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13013405 is about 3607.4097355305. The cubic root of 13013405 is about 235.2142606024.

Adding to 13013405 its reverse (50431031), we get a palindrome (63444436).

The spelling of 13013405 in words is "thirteen million, thirteen thousand, four hundred five".