523147681 has 8 divisors (see below), whose sum is σ = 633052800. Its totient is φ = 422035008.

The previous prime is 523147657. The next prime is 523147687. The reversal of 523147681 is 186741325.

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 523147681 - 2⁹ = 523147169 is a prime.

It is a super-2 number, since 2×523147681² = 547366992271355522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 523147681.

It is not an unprimeable number, because it can be changed into a prime (523147687) 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, 2197981 + ... + 2198218.

It is an arithmetic number, because the mean of its divisors is an integer number (79131600).

Almost surely, 2^523147681 is an apocalyptic number.

It is an amenable number.

523147681 is a deficient number, since it is larger than the sum of its proper divisors (109905119).

523147681 is a wasteful number, since it uses less digits than its factorization.

523147681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396223.

The product of its digits is 40320, while the sum is 37.

The square root of 523147681 is about 22872.4218437838. The cubic root of 523147681 is about 805.7644480145.

It can be divided in two parts, 52314 and 7681, that added together give a palindrome (59995).

The spelling of 523147681 in words is "five hundred twenty-three million, one hundred forty-seven thousand, six hundred eighty-one".