345186427 has 4 divisors (see below), whose sum is σ = 345414600. Its totient is φ = 344958256.

The previous prime is 345186419. The next prime is 345186463. The reversal of 345186427 is 724681543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724681543 = 113 ⋅6413111.

It is a cyclic number.

It is not a de Polignac number, because 345186427 - 2³ = 345186419 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345186427.

It is not an unprimeable number, because it can be changed into a prime (345186467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111802 + ... + 114847.

It is an arithmetic number, because the mean of its divisors is an integer number (86353650).

Almost surely, 2^345186427 is an apocalyptic number.

345186427 is a deficient number, since it is larger than the sum of its proper divisors (228173).

345186427 is a wasteful number, since it uses less digits than its factorization.

345186427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228172.

The product of its digits is 161280, while the sum is 40.

The square root of 345186427 is about 18579.1933893805. The cubic root of 345186427 is about 701.4842160857.

The spelling of 345186427 in words is "three hundred forty-five million, one hundred eighty-six thousand, four hundred twenty-seven".