323953975397 has 4 divisors (see below), whose sum is σ = 348873511980. Its totient is φ = 299034438816.

The previous prime is 323953975391. The next prime is 323953975453. The reversal of 323953975397 is 793579359323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793579359323 = 317 ⋅2503404919.

It can be written as a sum of positive squares in 2 ways, for example, as 23963349601 + 299990625796 = 154801^2 + 547714^2 .

It is a cyclic number.

It is not a de Polignac number, because 323953975397 - 2¹⁰ = 323953974373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323953975391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12459768272 + ... + 12459768297.

It is an arithmetic number, because the mean of its divisors is an integer number (87218377995).

Almost surely, 2^323953975397 is an apocalyptic number.

It is an amenable number.

323953975397 is a deficient number, since it is larger than the sum of its proper divisors (24919536583).

323953975397 is a wasteful number, since it uses less digits than its factorization.

323953975397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24919536582.

The product of its digits is 144670050, while the sum is 65.

The spelling of 323953975397 in words is "three hundred twenty-three billion, nine hundred fifty-three million, nine hundred seventy-five thousand, three hundred ninety-seven".