1345405223 has 2 divisors, whose sum is σ = 1345405224. Its totient is φ = 1345405222.

The previous prime is 1345405213. The next prime is 1345405231. The reversal of 1345405223 is 3225045431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1345405223 - 2⁸ = 1345404967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345405213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672702611 + 672702612.

It is an arithmetic number, because the mean of its divisors is an integer number (672702612).

Almost surely, 2^1345405223 is an apocalyptic number.

1345405223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345405223 is an equidigital number, since it uses as much as digits as its factorization.

1345405223 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1345405223 is about 36679.7658525787. The cubic root of 1345405223 is about 1103.9541500488.

The spelling of 1345405223 in words is "one billion, three hundred forty-five million, four hundred five thousand, two hundred twenty-three".