505634231 has 4 divisors (see below), whose sum is σ = 527618352. Its totient is φ = 483650112.

The previous prime is 505634209. The next prime is 505634237. The reversal of 505634231 is 132436505.

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 505634231 - 2²² = 501439927 is a prime.

It is a super-2 number, since 2×505634231² = 511331951117922722, 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 = 505634194 and 505634203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505634237) 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, 10992026 + ... + 10992071.

It is an arithmetic number, because the mean of its divisors is an integer number (131904588).

Almost surely, 2^505634231 is an apocalyptic number.

505634231 is a deficient number, since it is larger than the sum of its proper divisors (21984121).

505634231 is a wasteful number, since it uses less digits than its factorization.

505634231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21984120.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 505634231 is about 22486.3120809082. The cubic root of 505634231 is about 796.6706588931.

The spelling of 505634231 in words is "five hundred five million, six hundred thirty-four thousand, two hundred thirty-one".