13102531 has 4 divisors (see below), whose sum is σ = 14110432. Its totient is φ = 12094632.

The previous prime is 13102517. The next prime is 13102541. The reversal of 13102531 is 13520131.

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

It is a cyclic number.

It is not a de Polignac number, because 13102531 - 2⁵ = 13102499 is a prime.

It is a super-2 number, since 2×13102531² = 343352637211922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (13102511) 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, 503931 + ... + 503956.

It is an arithmetic number, because the mean of its divisors is an integer number (3527608).

Almost surely, 2^13102531 is an apocalyptic number.

13102531 is a deficient number, since it is larger than the sum of its proper divisors (1007901).

13102531 is a wasteful number, since it uses less digits than its factorization.

13102531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007900.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 13102531 is about 3619.7418416235. The cubic root of 13102531 is about 235.7500165870.

Adding to 13102531 its reverse (13520131), we get a palindrome (26622662).

The spelling of 13102531 in words is "thirteen million, one hundred two thousand, five hundred thirty-one".