13293481 has 2 divisors, whose sum is σ = 13293482. Its totient is φ = 13293480.

The previous prime is 13293479. The next prime is 13293509. The reversal of 13293481 is 18439231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12362256 + 931225 = 3516^2 + 965^2 .

It is an emirp because it is prime and its reverse (18439231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13293481 - 2¹ = 13293479 is a prime.

It is a super-2 number, since 2×13293481² = 353433274194722, which contains 22 as substring.

Together with 13293479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13293421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6646740 + 6646741.

It is an arithmetic number, because the mean of its divisors is an integer number (6646741).

Almost surely, 2^13293481 is an apocalyptic number.

It is an amenable number.

13293481 is a deficient number, since it is larger than the sum of its proper divisors (1).

13293481 is an equidigital number, since it uses as much as digits as its factorization.

13293481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 13293481 is about 3646.0226274668. The cubic root of 13293481 is about 236.8897336997.

The spelling of 13293481 in words is "thirteen million, two hundred ninety-three thousand, four hundred eighty-one".