13031231219 has 2 divisors, whose sum is σ = 13031231220. Its totient is φ = 13031231218.

The previous prime is 13031231203. The next prime is 13031231231. The reversal of 13031231219 is 91213213031.

It is a strong prime.

It is an emirp because it is prime and its reverse (91213213031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13031231219 - 2⁴ = 13031231203 is a prime.

It is a super-2 number, since 2×13031231219² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13031231249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515615609 + 6515615610.

It is an arithmetic number, because the mean of its divisors is an integer number (6515615610).

Almost surely, 2^13031231219 is an apocalyptic number.

13031231219 is a deficient number, since it is larger than the sum of its proper divisors (1).

13031231219 is an equidigital number, since it uses as much as digits as its factorization.

13031231219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 13031231219 in words is "thirteen billion, thirty-one million, two hundred thirty-one thousand, two hundred nineteen".