345040523 has 2 divisors, whose sum is σ = 345040524. Its totient is φ = 345040522.

The previous prime is 345040511. The next prime is 345040573. The reversal of 345040523 is 325040543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345040523 - 2⁶ = 345040459 is a prime.

It is a super-2 number, since 2×345040523² = 238105925024227058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 345040492 and 345040501.

It is not a weakly prime, because it can be changed into another prime (345040573) 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, 172520261 + 172520262.

It is an arithmetic number, because the mean of its divisors is an integer number (172520262).

Almost surely, 2^345040523 is an apocalyptic number.

345040523 is a deficient number, since it is larger than the sum of its proper divisors (1).

345040523 is an equidigital number, since it uses as much as digits as its factorization.

345040523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 345040523 is about 18575.2664314674. The cubic root of 345040523 is about 701.3853673005.

The spelling of 345040523 in words is "three hundred forty-five million, forty thousand, five hundred twenty-three".