505412031 has 4 divisors (see below), whose sum is σ = 673882712. Its totient is φ = 336941352.

The previous prime is 505411997. The next prime is 505412053. The reversal of 505412031 is 130214505.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 505412031 - 2⁷ = 505411903 is a prime.

It is a super-2 number, since 2×505412031² = 510882642159089922, 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 = 505411989 and 505412007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505412071) 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, 84235336 + ... + 84235341.

It is an arithmetic number, because the mean of its divisors is an integer number (168470678).

Almost surely, 2^505412031 is an apocalyptic number.

505412031 is a deficient number, since it is larger than the sum of its proper divisors (168470681).

505412031 is a wasteful number, since it uses less digits than its factorization.

505412031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168470680.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 505412031 is about 22481.3707544714. The cubic root of 505412031 is about 796.5539433266.

Adding to 505412031 its reverse (130214505), we get a palindrome (635626536).

The spelling of 505412031 in words is "five hundred five million, four hundred twelve thousand, thirty-one".