13231513 has 8 divisors (see below), whose sum is σ = 13789440. Its totient is φ = 12681840.

The previous prime is 13231481. The next prime is 13231523. The reversal of 13231513 is 31513231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13231513 - 2⁵ = 13231481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231523) 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 7 ways as a sum of consecutive naturals, for example, 1323 + ... + 5311.

It is an arithmetic number, because the mean of its divisors is an integer number (1723680).

Almost surely, 2^13231513 is an apocalyptic number.

It is an amenable number.

13231513 is a deficient number, since it is larger than the sum of its proper divisors (557927).

13231513 is a wasteful number, since it uses less digits than its factorization.

13231513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127.

The product of its digits is 270, while the sum is 19.

The square root of 13231513 is about 3637.5146735099. The cubic root of 13231513 is about 236.5210704915.

Adding to 13231513 its reverse (31513231), we get a palindrome (44744744).

The spelling of 13231513 in words is "thirteen million, two hundred thirty-one thousand, five hundred thirteen".