505322331 has 32 divisors (see below), whose sum is σ = 726900480. Its totient is φ = 311122944.

The previous prime is 505322317. The next prime is 505322371. The reversal of 505322331 is 133223505.

It is a happy number.

It is not a de Polignac number, because 505322331 - 2¹⁷ = 505191259 is a prime.

It is a super-2 number, since 2×505322331² = 510701316414547122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505322371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 739516 + ... + 740198.

It is an arithmetic number, because the mean of its divisors is an integer number (22715640).

Almost surely, 2^505322331 is an apocalyptic number.

505322331 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

505322331 is a deficient number, since it is larger than the sum of its proper divisors (221578149).

505322331 is a wasteful number, since it uses less digits than its factorization.

505322331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 505322331 is about 22479.3756808324. The cubic root of 505322331 is about 796.5068166842.

Adding to 505322331 its reverse (133223505), we get a palindrome (638545836).

The spelling of 505322331 in words is "five hundred five million, three hundred twenty-two thousand, three hundred thirty-one".