505341531 has 8 divisors (see below), whose sum is σ = 748654160. Its totient is φ = 336894336.

The previous prime is 505341527. The next prime is 505341593. The reversal of 505341531 is 135143505.

505341531 is a `hidden beast` number, since 505 + 3 + 4 + 153 + 1 = 666.

It is not a de Polignac number, because 505341531 - 2² = 505341527 is a prime.

It is a super-2 number, since 2×505341531² = 510740125906847922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 18716353 = 505341531 / (5 + 0 + 5 + 3 + 4 + 1 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505341495 and 505341504.

It is not an unprimeable number, because it can be changed into a prime (505341511) 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, 9358150 + ... + 9358203.

It is an arithmetic number, because the mean of its divisors is an integer number (93581770).

Almost surely, 2^505341531 is an apocalyptic number.

505341531 is a deficient number, since it is larger than the sum of its proper divisors (243312629).

505341531 is a wasteful number, since it uses less digits than its factorization.

505341531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18716362 (or 18716356 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 505341531 is about 22479.8027348996. The cubic root of 505341531 is about 796.5169044614.

The spelling of 505341531 in words is "five hundred five million, three hundred forty-one thousand, five hundred thirty-one".