523631881 has 8 divisors (see below), whose sum is σ = 555133184. Its totient is φ = 493043760.

The previous prime is 523631879. The next prime is 523631893. The reversal of 523631881 is 188136325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 523631881 - 2¹ = 523631879 is a prime.

It is a super-2 number, since 2×523631881² = 548380693599196322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 523631881.

It is not an unprimeable number, because it can be changed into a prime (523631821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227115 + ... + 229408.

It is an arithmetic number, because the mean of its divisors is an integer number (69391648).

Almost surely, 2^523631881 is an apocalyptic number.

It is an amenable number.

523631881 is a deficient number, since it is larger than the sum of its proper divisors (31501303).

523631881 is a wasteful number, since it uses less digits than its factorization.

523631881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456591.

The product of its digits is 34560, while the sum is 37.

The square root of 523631881 is about 22883.0041952537. The cubic root of 523631881 is about 806.0129634614.

The spelling of 523631881 in words is "five hundred twenty-three million, six hundred thirty-one thousand, eight hundred eighty-one".