523631789 has 2 divisors, whose sum is σ = 523631790. Its totient is φ = 523631788.

The previous prime is 523631753. The next prime is 523631791. The reversal of 523631789 is 987136325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523631689 + 100 = 22883^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 523631789 - 2⁸ = 523631533 is a prime.

Together with 523631791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523631389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261815894 + 261815895.

It is an arithmetic number, because the mean of its divisors is an integer number (261815895).

Almost surely, 2^523631789 is an apocalyptic number.

It is an amenable number.

523631789 is a deficient number, since it is larger than the sum of its proper divisors (1).

523631789 is an equidigital number, since it uses as much as digits as its factorization.

523631789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 523631789 is about 22883.0021850281. The cubic root of 523631789 is about 806.0129162570.

The spelling of 523631789 in words is "five hundred twenty-three million, six hundred thirty-one thousand, seven hundred eighty-nine".