523307140 has 24 divisors (see below), whose sum is σ = 1099512792. Its totient is φ = 209214720.

The previous prime is 523307131. The next prime is 523307171. The reversal of 523307140 is 41703325.

It can be written as a sum of positive squares in 4 ways, for example, as 172344384 + 350962756 = 13128^2 + 18734^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41232 + ... + 52408.

It is an arithmetic number, because the mean of its divisors is an integer number (45813033).

Almost surely, 2^523307140 is an apocalyptic number.

It is an amenable number.

523307140 is an abundant number, since it is smaller than the sum of its proper divisors (576205652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523307140 is a wasteful number, since it uses less digits than its factorization.

523307140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13527 (or 13525 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 523307140 is about 22875.9074136962. The cubic root of 523307140 is about 805.8463072074.

The spelling of 523307140 in words is "five hundred twenty-three million, three hundred seven thousand, one hundred forty".