509676331 has 4 divisors (see below), whose sum is σ = 509840632. Its totient is φ = 509512032.

The previous prime is 509676317. The next prime is 509676359. The reversal of 509676331 is 133676905.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133676905 = 5 ⋅26735381.

It is a cyclic number.

It is not a de Polignac number, because 509676331 - 2¹⁷ = 509545259 is a prime.

It is a super-2 number, since 2×509676331² = 519539924763243122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509676361) 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, 77406 + ... + 83731.

It is an arithmetic number, because the mean of its divisors is an integer number (127460158).

Almost surely, 2^509676331 is an apocalyptic number.

509676331 is a deficient number, since it is larger than the sum of its proper divisors (164301).

509676331 is a wasteful number, since it uses less digits than its factorization.

509676331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164300.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 509676331 is about 22576.0122918110. The cubic root of 509676331 is about 798.7879202349.

The spelling of 509676331 in words is "five hundred nine million, six hundred seventy-six thousand, three hundred thirty-one".