523442331 has 10 divisors (see below), whose sum is σ = 781932492. Its totient is φ = 348961500.

The previous prime is 523442299. The next prime is 523442369. The reversal of 523442331 is 133244325.

523442331 is a `hidden beast` number, since 5 + 234 + 423 + 3 + 1 = 666.

It is not a de Polignac number, because 523442331 - 2⁵ = 523442299 is a prime.

It is a super-2 number, since 2×523442331² = 547983747765427122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 523442295 and 523442304.

It is not an unprimeable number, because it can be changed into a prime (523442371) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3231045 + ... + 3231206.

Almost surely, 2^523442331 is an apocalyptic number.

523442331 is a deficient number, since it is larger than the sum of its proper divisors (258490161).

523442331 is an equidigital number, since it uses as much as digits as its factorization.

523442331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6462263 (or 6462254 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 523442331 is about 22878.8621002007. The cubic root of 523442331 is about 805.9156952587.

Adding to 523442331 its reverse (133244325), we get a palindrome (656686656).

The spelling of 523442331 in words is "five hundred twenty-three million, four hundred forty-two thousand, three hundred thirty-one".