345315187 has 4 divisors (see below), whose sum is σ = 394645936. Its totient is φ = 295984440.

The previous prime is 345315137. The next prime is 345315199. The reversal of 345315187 is 781513543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781513543 = 71 ⋅11007233.

It is a cyclic number.

It is not a de Polignac number, because 345315187 - 2¹¹ = 345313139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345315137) 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, 24665364 + ... + 24665377.

It is an arithmetic number, because the mean of its divisors is an integer number (98661484).

Almost surely, 2^345315187 is an apocalyptic number.

345315187 is a deficient number, since it is larger than the sum of its proper divisors (49330749).

345315187 is an equidigital number, since it uses as much as digits as its factorization.

345315187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49330748.

The product of its digits is 50400, while the sum is 37.

The square root of 345315187 is about 18582.6582328794. The cubic root of 345315187 is about 701.5714268142.

The spelling of 345315187 in words is "three hundred forty-five million, three hundred fifteen thousand, one hundred eighty-seven".