13531507 has 12 divisors (see below), whose sum is σ = 15688296. Its totient is φ = 11534720.

The previous prime is 13531501. The next prime is 13531519. The reversal of 13531507 is 70513531.

It is not a de Polignac number, because 13531507 - 2¹⁵ = 13498739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50169 + ... + 50437.

It is an arithmetic number, because the mean of its divisors is an integer number (1307358).

Almost surely, 2^13531507 is an apocalyptic number.

13531507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13531507 is a deficient number, since it is larger than the sum of its proper divisors (2156789).

13531507 is an equidigital number, since it uses as much as digits as its factorization.

13531507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 13531507 is about 3678.5196750867. The cubic root of 13531507 is about 238.2952518201.

The spelling of 13531507 in words is "thirteen million, five hundred thirty-one thousand, five hundred seven".