523871011 has 4 divisors (see below), whose sum is σ = 526354024. Its totient is φ = 521388000.

The previous prime is 523871009. The next prime is 523871039. The reversal of 523871011 is 110178325.

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 523871011 - 2¹ = 523871009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523871611) 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, 1241190 + ... + 1241611.

It is an arithmetic number, because the mean of its divisors is an integer number (131588506).

Almost surely, 2^523871011 is an apocalyptic number.

523871011 is a deficient number, since it is larger than the sum of its proper divisors (2483013).

523871011 is a wasteful number, since it uses less digits than its factorization.

523871011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483012.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 523871011 is about 22888.2286557960. The cubic root of 523871011 is about 806.1356403229.

The spelling of 523871011 in words is "five hundred twenty-three million, eight hundred seventy-one thousand, eleven".