13031013 has 4 divisors (see below), whose sum is σ = 17374688. Its totient is φ = 8687340.

The previous prime is 13031009. The next prime is 13031033. The reversal of 13031013 is 31013031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13031013 - 2² = 13031009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031033) 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 3 ways as a sum of consecutive naturals, for example, 2171833 + ... + 2171838.

It is an arithmetic number, because the mean of its divisors is an integer number (4343672).

Almost surely, 2^13031013 is an apocalyptic number.

It is an amenable number.

13031013 is a deficient number, since it is larger than the sum of its proper divisors (4343675).

13031013 is an equidigital number, since it uses as much as digits as its factorization.

13031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343674.

The product of its (nonzero) digits is 27, while the sum is 12.

The square root of 13031013 is about 3609.8494428438. The cubic root of 13031013 is about 235.3202996221.

Adding to 13031013 its reverse (31013031), we get a palindrome (44044044).

The spelling of 13031013 in words is "thirteen million, thirty-one thousand, thirteen".