523383691 has 4 divisors (see below), whose sum is σ = 524238112. Its totient is φ = 522529272.

The previous prime is 523383683. The next prime is 523383701. The reversal of 523383691 is 196383325.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523383691 - 2³ = 523383683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523383391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426291 + ... + 427516.

It is an arithmetic number, because the mean of its divisors is an integer number (131059528).

Almost surely, 2^523383691 is an apocalyptic number.

523383691 is a deficient number, since it is larger than the sum of its proper divisors (854421).

523383691 is an equidigital number, since it uses as much as digits as its factorization.

523383691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854420.

The product of its digits is 116640, while the sum is 40.

The square root of 523383691 is about 22877.5805320405. The cubic root of 523383691 is about 805.8855991949.

The spelling of 523383691 in words is "five hundred twenty-three million, three hundred eighty-three thousand, six hundred ninety-one".