522312031 has 4 divisors (see below), whose sum is σ = 524197912. Its totient is φ = 520426152.

The previous prime is 522312023. The next prime is 522312041. The reversal of 522312031 is 130213225.

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

It is a cyclic number.

It is not a de Polignac number, because 522312031 - 2³ = 522312023 is a prime.

It is a super-2 number, since 2×522312031² = 545619715454689922, 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 (522312041) 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, 942525 + ... + 943078.

It is an arithmetic number, because the mean of its divisors is an integer number (131049478).

Almost surely, 2^522312031 is an apocalyptic number.

522312031 is a deficient number, since it is larger than the sum of its proper divisors (1885881).

522312031 is a wasteful number, since it uses less digits than its factorization.

522312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885880.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 522312031 is about 22854.1469103531. The cubic root of 522312031 is about 805.3351900679.

Adding to 522312031 its reverse (130213225), we get a palindrome (652525256).

The spelling of 522312031 in words is "five hundred twenty-two million, three hundred twelve thousand, thirty-one".