13081907 has 4 divisors (see below), whose sum is σ = 13503936. Its totient is φ = 12659880.

The previous prime is 13081903. The next prime is 13081909. The reversal of 13081907 is 70918031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70918031 = 757 ⋅93683.

It is a cyclic number.

It is not a de Polignac number, because 13081907 - 2² = 13081903 is a prime.

It is a super-2 number, since 2×13081907² = 342272581513298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13081907.

It is not an unprimeable number, because it can be changed into a prime (13081903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210968 + ... + 211029.

It is an arithmetic number, because the mean of its divisors is an integer number (3375984).

Almost surely, 2^13081907 is an apocalyptic number.

13081907 is a deficient number, since it is larger than the sum of its proper divisors (422029).

13081907 is an equidigital number, since it uses as much as digits as its factorization.

13081907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422028.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 13081907 is about 3616.8918977487. The cubic root of 13081907 is about 235.6262577591.

Adding to 13081907 its reverse (70918031), we get a palindrome (83999938).

The spelling of 13081907 in words is "thirteen million, eighty-one thousand, nine hundred seven".