345402223 has 2 divisors, whose sum is σ = 345402224. Its totient is φ = 345402222.

The previous prime is 345402199. The next prime is 345402251. The reversal of 345402223 is 322204543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345402223 - 2⁹ = 345401711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345402263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172701111 + 172701112.

It is an arithmetic number, because the mean of its divisors is an integer number (172701112).

Almost surely, 2^345402223 is an apocalyptic number.

345402223 is a deficient number, since it is larger than the sum of its proper divisors (1).

345402223 is an equidigital number, since it uses as much as digits as its factorization.

345402223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 345402223 is about 18584.9999461932. Note that the first 4 decimals coincide. The cubic root of 345402223 is about 701.6303650862.

Adding to 345402223 its reverse (322204543), we get a palindrome (667606766).

It can be divided in two parts, 34540 and 2223, that added together give a palindrome (36763).

The spelling of 345402223 in words is "three hundred forty-five million, four hundred two thousand, two hundred twenty-three".