523243431 has 12 divisors (see below), whose sum is σ = 756011880. Its totient is φ = 348729360.

The previous prime is 523243423. The next prime is 523243463. The reversal of 523243431 is 134342325.

It is not a de Polignac number, because 523243431 - 2³ = 523243423 is a prime.

It is a super-2 number, since 2×523243431² = 547567376169303522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 523243395 and 523243404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523243471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39400 + ... + 50978.

It is an arithmetic number, because the mean of its divisors is an integer number (63000990).

Almost surely, 2^523243431 is an apocalyptic number.

523243431 is a deficient number, since it is larger than the sum of its proper divisors (232768449).

523243431 is a wasteful number, since it uses less digits than its factorization.

523243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16606 (or 16603 counting only the distinct ones).

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

The square root of 523243431 is about 22874.5148801018. The cubic root of 523243431 is about 805.8136038215.

Adding to 523243431 its reverse (134342325), we get a palindrome (657585756).

It can be divided in two parts, 52324 and 3431, that added together give a palindrome (55755).

The spelling of 523243431 in words is "five hundred twenty-three million, two hundred forty-three thousand, four hundred thirty-one".