345504023 has 2 divisors, whose sum is σ = 345504024. Its totient is φ = 345504022.

The previous prime is 345504001. The next prime is 345504041. The reversal of 345504023 is 320405543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345504023 - 2¹⁰ = 345502999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345503983 and 345504001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345504043) 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, 172752011 + 172752012.

It is an arithmetic number, because the mean of its divisors is an integer number (172752012).

Almost surely, 2^345504023 is an apocalyptic number.

345504023 is a deficient number, since it is larger than the sum of its proper divisors (1).

345504023 is an equidigital number, since it uses as much as digits as its factorization.

345504023 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 345504023 is about 18587.7385122559. The cubic root of 345504023 is about 701.6992885523.

Adding to 345504023 its reverse (320405543), we get a palindrome (665909566).

The spelling of 345504023 in words is "three hundred forty-five million, five hundred four thousand, twenty-three".