523123447 has 16 divisors (see below), whose sum is σ = 686534400. Its totient is φ = 386173440.

The previous prime is 523123417. The next prime is 523123457. The reversal of 523123447 is 744321325.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523123447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523123417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177322 + ... + 180247.

It is an arithmetic number, because the mean of its divisors is an integer number (42908400).

Almost surely, 2^523123447 is an apocalyptic number.

523123447 is a deficient number, since it is larger than the sum of its proper divisors (163410953).

523123447 is a wasteful number, since it uses less digits than its factorization.

523123447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357606.

The product of its digits is 20160, while the sum is 31.

The square root of 523123447 is about 22871.8920730227. The cubic root of 523123447 is about 805.7520058954.

The spelling of 523123447 in words is "five hundred twenty-three million, one hundred twenty-three thousand, four hundred forty-seven".