523721713 has 4 divisors (see below), whose sum is σ = 524788848. Its totient is φ = 522654580.

The previous prime is 523721687. The next prime is 523721729. The reversal of 523721713 is 317127325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 523721713 - 2¹³ = 523713521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523721813) 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, 532831 + ... + 533812.

It is an arithmetic number, because the mean of its divisors is an integer number (131197212).

Almost surely, 2^523721713 is an apocalyptic number.

It is an amenable number.

523721713 is a deficient number, since it is larger than the sum of its proper divisors (1067135).

523721713 is a wasteful number, since it uses less digits than its factorization.

523721713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067134.

The product of its digits is 8820, while the sum is 31.

The square root of 523721713 is about 22884.9669652372. The cubic root of 523721713 is about 806.0590528479.

The spelling of 523721713 in words is "five hundred twenty-three million, seven hundred twenty-one thousand, seven hundred thirteen".