345315251 has 4 divisors (see below), whose sum is σ = 352662432. Its totient is φ = 337968072.

The previous prime is 345315221. The next prime is 345315287. The reversal of 345315251 is 152513543.

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 345315251 - 2²² = 341120947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345315221) 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, 3673520 + ... + 3673613.

It is an arithmetic number, because the mean of its divisors is an integer number (88165608).

Almost surely, 2^345315251 is an apocalyptic number.

345315251 is a deficient number, since it is larger than the sum of its proper divisors (7347181).

345315251 is an equidigital number, since it uses as much as digits as its factorization.

345315251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7347180.

The product of its digits is 9000, while the sum is 29.

The square root of 345315251 is about 18582.6599549150. The cubic root of 345315251 is about 701.5714701568.

Adding to 345315251 its reverse (152513543), we get a palindrome (497828794).

The spelling of 345315251 in words is "three hundred forty-five million, three hundred fifteen thousand, two hundred fifty-one".