523631040 has 56 divisors (see below), whose sum is σ = 1662531600. Its totient is φ = 139634688.

The previous prime is 523631029. The next prime is 523631107. The reversal of 523631040 is 40136325.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 523631040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271765 + ... + 273684.

Almost surely, 2^523631040 is an apocalyptic number.

It is an amenable number.

523631040 is an abundant number, since it is smaller than the sum of its proper divisors (1138900560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523631040 is a wasteful number, since it uses less digits than its factorization.

523631040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545469 (or 545459 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 523631040 is about 22882.9858191627. The cubic root of 523631040 is about 806.0125319514.

Adding to 523631040 its reverse (40136325), we get a palindrome (563767365).

The spelling of 523631040 in words is "five hundred twenty-three million, six hundred thirty-one thousand, forty".