13031211001 has 4 divisors (see below), whose sum is σ = 13031705232. Its totient is φ = 13030716772.

The previous prime is 13031210911. The next prime is 13031211007. The reversal of 13031211001 is 10011213031.

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 a cyclic number.

It is not a de Polignac number, because 13031211001 - 2⁷ = 13031210873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031211007) 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, 205195 + ... + 261088.

It is an arithmetic number, because the mean of its divisors is an integer number (3257926308).

Almost surely, 2^13031211001 is an apocalyptic number.

It is an amenable number.

13031211001 is a deficient number, since it is larger than the sum of its proper divisors (494231).

13031211001 is an equidigital number, since it uses as much as digits as its factorization.

13031211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494230.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 13031211001 its reverse (10011213031), we get a palindrome (23042424032).

The spelling of 13031211001 in words is "thirteen billion, thirty-one million, two hundred eleven thousand, one".