13453531397 has 2 divisors, whose sum is σ = 13453531398. Its totient is φ = 13453531396.

The previous prime is 13453531379. The next prime is 13453531447. The reversal of 13453531397 is 79313535431.

Together with previous prime (13453531379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13122618916 + 330912481 = 114554^2 + 18191^2 .

It is a cyclic number.

It is not a de Polignac number, because 13453531397 - 2¹² = 13453527301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13453531307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6726765698 + 6726765699.

It is an arithmetic number, because the mean of its divisors is an integer number (6726765699).

Almost surely, 2^13453531397 is an apocalyptic number.

It is an amenable number.

13453531397 is a deficient number, since it is larger than the sum of its proper divisors (1).

13453531397 is an equidigital number, since it uses as much as digits as its factorization.

13453531397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 44.

The spelling of 13453531397 in words is "thirteen billion, four hundred fifty-three million, five hundred thirty-one thousand, three hundred ninety-seven".