13090531 has 2 divisors, whose sum is σ = 13090532. Its totient is φ = 13090530.

The previous prime is 13090529. The next prime is 13090543. The reversal of 13090531 is 13509031.

It is a weak prime.

It is an emirp because it is prime and its reverse (13509031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13090531 - 2¹ = 13090529 is a prime.

It is a super-2 number, since 2×13090531² = 342724003723922, which contains 22 as substring.

Together with 13090529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13090331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6545265 + 6545266.

It is an arithmetic number, because the mean of its divisors is an integer number (6545266).

Almost surely, 2^13090531 is an apocalyptic number.

13090531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13090531 is an equidigital number, since it uses as much as digits as its factorization.

13090531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 13090531 is about 3618.0838851525. The cubic root of 13090531 is about 235.6780237716.

Adding to 13090531 its reverse (13509031), we get a palindrome (26599562).

The spelling of 13090531 in words is "thirteen million, ninety thousand, five hundred thirty-one".