345272723 has 2 divisors, whose sum is σ = 345272724. Its totient is φ = 345272722.

The previous prime is 345272717. The next prime is 345272791. The reversal of 345272723 is 327272543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345272723 - 2²⁰ = 344224147 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (345272713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172636361 + 172636362.

It is an arithmetic number, because the mean of its divisors is an integer number (172636362).

Almost surely, 2^345272723 is an apocalyptic number.

345272723 is a deficient number, since it is larger than the sum of its proper divisors (1).

345272723 is an equidigital number, since it uses as much as digits as its factorization.

345272723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 35.

The square root of 345272723 is about 18581.5156270957. The cubic root of 345272723 is about 701.5426678220.

The spelling of 345272723 in words is "three hundred forty-five million, two hundred seventy-two thousand, seven hundred twenty-three".