13081532 has 6 divisors (see below), whose sum is σ = 22892688. Its totient is φ = 6540764.

The previous prime is 13081507. The next prime is 13081559. The reversal of 13081532 is 23518031.

It is a super-2 number, since 2×13081532² = 342252958934048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13081498 and 13081507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635188 + ... + 1635195.

It is an arithmetic number, because the mean of its divisors is an integer number (3815448).

Almost surely, 2^13081532 is an apocalyptic number.

It is an amenable number.

13081532 is a deficient number, since it is larger than the sum of its proper divisors (9811156).

13081532 is a wasteful number, since it uses less digits than its factorization.

13081532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3270387 (or 3270385 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 13081532 is about 3616.8400572876. The cubic root of 13081532 is about 235.6240062859.

Adding to 13081532 its reverse (23518031), we get a palindrome (36599563).

The spelling of 13081532 in words is "thirteen million, eighty-one thousand, five hundred thirty-two".