13400203347 has 6 divisors (see below), whose sum is σ = 19355849292. Its totient is φ = 8933468892.

The previous prime is 13400203343. The next prime is 13400203357. The reversal of 13400203347 is 74330200431.

13400203347 is a `hidden beast` number, since 13 + 400 + 203 + 3 + 47 = 666.

It is not a de Polignac number, because 13400203347 - 2² = 13400203343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13400203347.

It is not an unprimeable number, because it can be changed into a prime (13400203343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 744455733 + ... + 744455750.

It is an arithmetic number, because the mean of its divisors is an integer number (3225974882).

Almost surely, 2^13400203347 is an apocalyptic number.

13400203347 is a deficient number, since it is larger than the sum of its proper divisors (5955645945).

13400203347 is a wasteful number, since it uses less digits than its factorization.

13400203347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488911489 (or 1488911486 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

Adding to 13400203347 its reverse (74330200431), we get a palindrome (87730403778).

The spelling of 13400203347 in words is "thirteen billion, four hundred million, two hundred three thousand, three hundred forty-seven".