13013431 has 8 divisors (see below), whose sum is σ = 13549680. Its totient is φ = 12483072.

The previous prime is 13013417. The next prime is 13013437. The reversal of 13013431 is 13431031.

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 13013431 - 2⁷ = 13013303 is a prime.

It is a super-2 number, since 2×13013431² = 338698772783522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013437) 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, 3351 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (1693710).

Almost surely, 2^13013431 is an apocalyptic number.

13013431 is a deficient number, since it is larger than the sum of its proper divisors (536249).

13013431 is a wasteful number, since it uses less digits than its factorization.

13013431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 13013431 is about 3607.4133392224. The cubic root of 13013431 is about 235.2144172503.

Adding to 13013431 its reverse (13431031), we get a palindrome (26444462).

The spelling of 13013431 in words is "thirteen million, thirteen thousand, four hundred thirty-one".