13011001 has 4 divisors (see below), whose sum is σ = 13776372. Its totient is φ = 12245632.

The previous prime is 13010993. The next prime is 13011007. The reversal of 13011001 is 10011031.

It is a happy number.

13011001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10011031 = 647 ⋅15473.

It can be written as a sum of positive squares in 2 ways, for example, as 6885376 + 6125625 = 2624^2 + 2475^2 .

It is a cyclic number.

It is not a de Polignac number, because 13011001 - 2³ = 13010993 is a prime.

It is a super-2 number, since 2×13011001² = 338572294044002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13011007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382660 + ... + 382693.

It is an arithmetic number, because the mean of its divisors is an integer number (3444093).

Almost surely, 2^13011001 is an apocalyptic number.

It is an amenable number.

13011001 is a deficient number, since it is larger than the sum of its proper divisors (765371).

13011001 is an equidigital number, since it uses as much as digits as its factorization.

13011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765370.

The product of its (nonzero) digits is 3, while the sum is 7.

The square root of 13011001 is about 3607.0765170703. The cubic root of 13011001 is about 235.1997757973.

Adding to 13011001 its reverse (10011031), we get a palindrome (23022032).

The spelling of 13011001 in words is "thirteen million, eleven thousand, one".