13440312373 has 2 divisors, whose sum is σ = 13440312374. Its totient is φ = 13440312372.

The previous prime is 13440312349. The next prime is 13440312439. The reversal of 13440312373 is 37321304431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9936501124 + 3503811249 = 99682^2 + 59193^2 .

It is an emirp because it is prime and its reverse (37321304431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13440312373 - 2⁹ = 13440311861 is a prime.

It is a super-2 number, since 2×13440312373² (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 (13440312323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720156186 + 6720156187.

It is an arithmetic number, because the mean of its divisors is an integer number (6720156187).

Almost surely, 2^13440312373 is an apocalyptic number.

It is an amenable number.

13440312373 is a deficient number, since it is larger than the sum of its proper divisors (1).

13440312373 is an equidigital number, since it uses as much as digits as its factorization.

13440312373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 31.

The spelling of 13440312373 in words is "thirteen billion, four hundred forty million, three hundred twelve thousand, three hundred seventy-three".