13031005 has 32 divisors (see below), whose sum is σ = 18063360. Its totient is φ = 8951040.

The previous prime is 13030999. The next prime is 13031009. The reversal of 13031005 is 50013031.

It is not a de Polignac number, because 13031005 - 2⁵ = 13030973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58324 + ... + 58546.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^13031005 is an apocalyptic number.

It is an amenable number.

13031005 is a deficient number, since it is larger than the sum of its proper divisors (5032355).

13031005 is a wasteful number, since it uses less digits than its factorization.

13031005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 13031005 is about 3609.8483347642. The cubic root of 13031005 is about 235.3202514661.

Adding to 13031005 its reverse (50013031), we get a palindrome (63044036).

The spelling of 13031005 in words is "thirteen million, thirty-one thousand, five".