13431013381 has 2 divisors, whose sum is σ = 13431013382. Its totient is φ = 13431013380.

The previous prime is 13431013363. The next prime is 13431013439. The reversal of 13431013381 is 18331013431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8329482756 + 5101530625 = 91266^2 + 71425^2 .

It is an emirp because it is prime and its reverse (18331013431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13431013381 - 2⁹ = 13431012869 is a prime.

It is a super-2 number, since 2×13431013381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13431013361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715506690 + 6715506691.

It is an arithmetic number, because the mean of its divisors is an integer number (6715506691).

Almost surely, 2^13431013381 is an apocalyptic number.

It is an amenable number.

13431013381 is a deficient number, since it is larger than the sum of its proper divisors (1).

13431013381 is an equidigital number, since it uses as much as digits as its factorization.

13431013381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 13431013381 in words is "thirteen billion, four hundred thirty-one million, thirteen thousand, three hundred eighty-one".