13040031 has 8 divisors (see below), whose sum is σ = 17671984. Its totient is φ = 8550720.

The previous prime is 13040029. The next prime is 13040059. The reversal of 13040031 is 13004031.

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

It is not a de Polignac number, because 13040031 - 2¹ = 13040029 is a prime.

It is a super-2 number, since 2×13040031² = 340084816961922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13039989 and 13040016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35446 + ... + 35811.

It is an arithmetic number, because the mean of its divisors is an integer number (2208998).

Almost surely, 2^13040031 is an apocalyptic number.

13040031 is a deficient number, since it is larger than the sum of its proper divisors (4631953).

13040031 is an equidigital number, since it uses as much as digits as its factorization.

13040031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71321.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13040031 is about 3611.0983093790. The cubic root of 13040031 is about 235.3745708983.

Adding to 13040031 its reverse (13004031), we get a palindrome (26044062).

The spelling of 13040031 in words is "thirteen million, forty thousand, thirty-one".