505402231 has 8 divisors (see below), whose sum is σ = 535686480. Its totient is φ = 475179648.

The previous prime is 505402217. The next prime is 505402243. The reversal of 505402231 is 132204505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505402231 - 2⁵ = 505402199 is a prime.

It is a super-2 number, since 2×505402231² = 510862830199554722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505402031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2040 + ... + 31858.

It is an arithmetic number, because the mean of its divisors is an integer number (66960810).

Almost surely, 2^505402231 is an apocalyptic number.

505402231 is a deficient number, since it is larger than the sum of its proper divisors (30284249).

505402231 is a wasteful number, since it uses less digits than its factorization.

505402231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30833.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 505402231 is about 22481.1527951749. The cubic root of 505402231 is about 796.5487948678.

Adding to 505402231 its reverse (132204505), we get a palindrome (637606736).

The spelling of 505402231 in words is "five hundred five million, four hundred two thousand, two hundred thirty-one".