345875321 has 4 divisors (see below), whose sum is σ = 377318544. Its totient is φ = 314432100.

The previous prime is 345875317. The next prime is 345875323. The reversal of 345875321 is 123578543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 345875321 - 2² = 345875317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345875323) 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, 15721595 + ... + 15721616.

It is an arithmetic number, because the mean of its divisors is an integer number (94329636).

Almost surely, 2^345875321 is an apocalyptic number.

It is an amenable number.

345875321 is a deficient number, since it is larger than the sum of its proper divisors (31443223).

345875321 is a wasteful number, since it uses less digits than its factorization.

345875321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31443222.

The product of its digits is 100800, while the sum is 38.

The square root of 345875321 is about 18597.7235434878. The cubic root of 345875321 is about 701.9505603664.

The spelling of 345875321 in words is "three hundred forty-five million, eight hundred seventy-five thousand, three hundred twenty-one".