13081507 has 2 divisors, whose sum is σ = 13081508. Its totient is φ = 13081506.

The previous prime is 13081493. The next prime is 13081559. The reversal of 13081507 is 70518031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13081507 - 2⁷ = 13081379 is a prime.

It is a super-2 number, since 2×13081507² = 342251650782098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13081207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6540753 + 6540754.

It is an arithmetic number, because the mean of its divisors is an integer number (6540754).

Almost surely, 2^13081507 is an apocalyptic number.

13081507 is a deficient number, since it is larger than the sum of its proper divisors (1).

13081507 is an equidigital number, since it uses as much as digits as its factorization.

13081507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 13081507 is about 3616.8366012304. The cubic root of 13081507 is about 235.6238561861.

Adding to 13081507 its reverse (70518031), we get a palindrome (83599538).

The spelling of 13081507 in words is "thirteen million, eighty-one thousand, five hundred seven".