523208345 has 16 divisors (see below), whose sum is σ = 693185472. Its totient is φ = 375927360.

The previous prime is 523208341. The next prime is 523208351. The reversal of 523208345 is 543802325.

It is not a de Polignac number, because 523208345 - 2² = 523208341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523208341) 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 in 15 ways as a sum of consecutive naturals, for example, 52742 + ... + 61871.

It is an arithmetic number, because the mean of its divisors is an integer number (43324092).

Almost surely, 2^523208345 is an apocalyptic number.

523208345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

523208345 is a deficient number, since it is larger than the sum of its proper divisors (169977127).

523208345 is a wasteful number, since it uses less digits than its factorization.

523208345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114712.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 523208345 is about 22873.7479438766. The cubic root of 523208345 is about 805.7955921872.

The spelling of 523208345 in words is "five hundred twenty-three million, two hundred eight thousand, three hundred forty-five".