345508427 has 4 divisors (see below), whose sum is σ = 376918296. Its totient is φ = 314098560.

The previous prime is 345508411. The next prime is 345508511. The reversal of 345508427 is 724805543.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345508427 - 2⁴ = 345508411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345502427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15704918 + ... + 15704939.

It is an arithmetic number, because the mean of its divisors is an integer number (94229574).

Almost surely, 2^345508427 is an apocalyptic number.

345508427 is a deficient number, since it is larger than the sum of its proper divisors (31409869).

345508427 is a wasteful number, since it uses less digits than its factorization.

345508427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31409868.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 345508427 is about 18587.8569770697. The cubic root of 345508427 is about 701.7022699653.

The spelling of 345508427 in words is "three hundred forty-five million, five hundred eight thousand, four hundred twenty-seven".