505123230 has 32 divisors (see below), whose sum is σ = 1219567104. Its totient is φ = 133891616.

The previous prime is 505123187. The next prime is 505123243. The reversal of 505123230 is 32321505.

It is a junction number, because it is equal to n+sod(n) for n = 505123197 and 505123206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45402 + ... + 55421.

It is an arithmetic number, because the mean of its divisors is an integer number (38111472).

Almost surely, 2^505123230 is an apocalyptic number.

505123230 is an abundant number, since it is smaller than the sum of its proper divisors (714443874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505123230 is a wasteful number, since it uses less digits than its factorization.

505123230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101000.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 505123230 is about 22474.9467185130. The cubic root of 505123230 is about 796.4021929444.

Adding to 505123230 its reverse (32321505), we get a palindrome (537444735).

The spelling of 505123230 in words is "five hundred five million, one hundred twenty-three thousand, two hundred thirty".