13431527 has 4 divisors (see below), whose sum is σ = 13659240. Its totient is φ = 13203816.

The previous prime is 13431521. The next prime is 13431533. The reversal of 13431527 is 72513431.

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

It is an interprime number because it is at equal distance from previous prime (13431521) and next prime (13431533).

It is a cyclic number.

It is not a de Polignac number, because 13431527 - 2¹⁰ = 13430503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13431496 and 13431505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431521) 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, 113768 + ... + 113885.

It is an arithmetic number, because the mean of its divisors is an integer number (3414810).

Almost surely, 2^13431527 is an apocalyptic number.

13431527 is a deficient number, since it is larger than the sum of its proper divisors (227713).

13431527 is an equidigital number, since it uses as much as digits as its factorization.

13431527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227712.

The product of its digits is 2520, while the sum is 26.

The square root of 13431527 is about 3664.9047736606. The cubic root of 13431527 is about 237.7069044619.

Adding to 13431527 its reverse (72513431), we get a palindrome (85944958).

The spelling of 13431527 in words is "thirteen million, four hundred thirty-one thousand, five hundred twenty-seven".