345223451 has 2 divisors, whose sum is σ = 345223452. Its totient is φ = 345223450.

The previous prime is 345223433. The next prime is 345223481. The reversal of 345223451 is 154322543.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345223451 - 2²² = 341029147 is a prime.

It is a super-2 number, since 2×345223451² = 238358462240698802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345223481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172611725 + 172611726.

It is an arithmetic number, because the mean of its divisors is an integer number (172611726).

Almost surely, 2^345223451 is an apocalyptic number.

345223451 is a deficient number, since it is larger than the sum of its proper divisors (1).

345223451 is an equidigital number, since it uses as much as digits as its factorization.

345223451 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 345223451 is about 18580.1897460709. The cubic root of 345223451 is about 701.5092951165.

Adding to 345223451 its reverse (154322543), we get a palindrome (499545994).

It can be divided in two parts, 34522 and 3451, that added together give a palindrome (37973).

The spelling of 345223451 in words is "three hundred forty-five million, two hundred twenty-three thousand, four hundred fifty-one".