345342251 has 2 divisors, whose sum is σ = 345342252. Its totient is φ = 345342250.

The previous prime is 345342247. The next prime is 345342253. The reversal of 345342251 is 152243543.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (152243543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345342251 - 2² = 345342247 is a prime.

It is a super-2 number, since 2×345342251² = 238522540651494002, which contains 22 as substring.

Together with 345342253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345342253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172671125 + 172671126.

It is an arithmetic number, because the mean of its divisors is an integer number (172671126).

Almost surely, 2^345342251 is an apocalyptic number.

345342251 is a deficient number, since it is larger than the sum of its proper divisors (1).

345342251 is an equidigital number, since it uses as much as digits as its factorization.

345342251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 29.

The square root of 345342251 is about 18583.3864244384. The cubic root of 345342251 is about 701.5897548362.

Adding to 345342251 its reverse (152243543), we get a palindrome (497585794).

The spelling of 345342251 in words is "three hundred forty-five million, three hundred forty-two thousand, two hundred fifty-one".