523123147 has 2 divisors, whose sum is σ = 523123148. Its totient is φ = 523123146.

The previous prime is 523123127. The next prime is 523123151. The reversal of 523123147 is 741321325.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523123147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (523123127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261561573 + 261561574.

It is an arithmetic number, because the mean of its divisors is an integer number (261561574).

Almost surely, 2^523123147 is an apocalyptic number.

523123147 is a deficient number, since it is larger than the sum of its proper divisors (1).

523123147 is an equidigital number, since it uses as much as digits as its factorization.

523123147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 523123147 is about 22871.8855147537. The cubic root of 523123147 is about 805.7518518683.

The spelling of 523123147 in words is "five hundred twenty-three million, one hundred twenty-three thousand, one hundred forty-seven".