13523074309 has 2 divisors, whose sum is σ = 13523074310. Its totient is φ = 13523074308.

The previous prime is 13523074283. The next prime is 13523074333. The reversal of 13523074309 is 90347032531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13458320100 + 64754209 = 116010^2 + 8047^2 .

It is a cyclic number.

It is not a de Polignac number, because 13523074309 - 2¹¹ = 13523072261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13523074349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6761537154 + 6761537155.

It is an arithmetic number, because the mean of its divisors is an integer number (6761537155).

Almost surely, 2^13523074309 is an apocalyptic number.

It is an amenable number.

13523074309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13523074309 is an equidigital number, since it uses as much as digits as its factorization.

13523074309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 37.

The spelling of 13523074309 in words is "thirteen billion, five hundred twenty-three million, seventy-four thousand, three hundred nine".