13031000231 has 4 divisors (see below), whose sum is σ = 13334046792. Its totient is φ = 12727953672.

The previous prime is 13031000219. The next prime is 13031000251. The reversal of 13031000231 is 13200013031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13031000231 is a prime.

It is a super-2 number, since 2×13031000231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031000201) 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, 151523216 + ... + 151523301.

It is an arithmetic number, because the mean of its divisors is an integer number (3333511698).

Almost surely, 2^13031000231 is an apocalyptic number.

13031000231 is a deficient number, since it is larger than the sum of its proper divisors (303046561).

13031000231 is an equidigital number, since it uses as much as digits as its factorization.

13031000231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303046560.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 13031000231 its reverse (13200013031), we get a palindrome (26231013262).

The spelling of 13031000231 in words is "thirteen billion, thirty-one million, two hundred thirty-one", and thus it is an aban number.