509082131 has 4 divisors (see below), whose sum is σ = 509132952. Its totient is φ = 509031312.

The previous prime is 509082121. The next prime is 509082151. The reversal of 509082131 is 131280905.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 509082131 - 2²² = 504887827 is a prime.

It is a super-2 number, since 2×509082131² = 518329232207002322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 509082094 and 509082103.

It is not an unprimeable number, because it can be changed into a prime (509082121) 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, 4826 + ... + 32271.

It is an arithmetic number, because the mean of its divisors is an integer number (127283238).

Almost surely, 2^509082131 is an apocalyptic number.

509082131 is a deficient number, since it is larger than the sum of its proper divisors (50821).

509082131 is a wasteful number, since it uses less digits than its factorization.

509082131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50820.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 509082131 is about 22562.8484682232. The cubic root of 509082131 is about 798.4773804381.

The spelling of 509082131 in words is "five hundred nine million, eighty-two thousand, one hundred thirty-one".