509232228013 has 4 divisors (see below), whose sum is σ = 509234204380. Its totient is φ = 509230251648.

The previous prime is 509232227983. The next prime is 509232228017. The reversal of 509232228013 is 310822232905.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310822232905 = 5 ⋅62164446581.

It can be written as a sum of positive squares in 2 ways, for example, as 95497686729 + 413734541284 = 309027^2 + 643222^2 .

It is a cyclic number.

It is not a de Polignac number, because 509232228013 - 2¹⁷ = 509232096941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509232228017) 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, 531270 + ... + 1140487.

It is an arithmetic number, because the mean of its divisors is an integer number (127308551095).

Almost surely, 2^509232228013 is an apocalyptic number.

It is an amenable number.

509232228013 is a deficient number, since it is larger than the sum of its proper divisors (1976367).

509232228013 is a wasteful number, since it uses less digits than its factorization.

509232228013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976366.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 509232228013 in words is "five hundred nine billion, two hundred thirty-two million, two hundred twenty-eight thousand, thirteen".