13032531 has 6 divisors (see below), whose sum is σ = 18824780. Its totient is φ = 8688348.

The previous prime is 13032529. The next prime is 13032533. The reversal of 13032531 is 13523031.

13032531 is a `hidden beast` number, since 130 + 3 + 2 + 531 = 666.

It is an interprime number because it is at equal distance from previous prime (13032529) and next prime (13032533).

It is not a de Polignac number, because 13032531 - 2¹ = 13032529 is a prime.

It is a super-2 number, since 2×13032531² = 339693728531922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13032533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 724021 + ... + 724038.

Almost surely, 2^13032531 is an apocalyptic number.

13032531 is a deficient number, since it is larger than the sum of its proper divisors (5792249).

13032531 is a wasteful number, since it uses less digits than its factorization.

13032531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448065 (or 1448062 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13032531 is about 3610.0596947973. The cubic root of 13032531 is about 235.3294368586.

Adding to 13032531 its reverse (13523031), we get a palindrome (26555562).

The spelling of 13032531 in words is "thirteen million, thirty-two thousand, five hundred thirty-one".