13213304397 has 48 divisors (see below), whose sum is σ = 19763714880. Its totient is φ = 8501280000.

The previous prime is 13213304393. The next prime is 13213304399. The reversal of 13213304397 is 79340331231.

It is a happy number.

13213304397 is a `hidden beast` number, since 1 + 3 + 213 + 3 + 0 + 439 + 7 = 666.

It is not a de Polignac number, because 13213304397 - 2² = 13213304393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213304393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16578403 + ... + 16579199.

It is an arithmetic number, because the mean of its divisors is an integer number (411744060).

Almost surely, 2^13213304397 is an apocalyptic number.

It is an amenable number.

13213304397 is a deficient number, since it is larger than the sum of its proper divisors (6550410483).

13213304397 is a wasteful number, since it uses less digits than its factorization.

13213304397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The spelling of 13213304397 in words is "thirteen billion, two hundred thirteen million, three hundred four thousand, three hundred ninety-seven".