501113213 has 4 divisors (see below), whose sum is σ = 522900768. Its totient is φ = 479325660.

The previous prime is 501113203. The next prime is 501113227. The reversal of 501113213 is 312311105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312311105 = 5 ⋅62462221.

It is a cyclic number.

It is not a de Polignac number, because 501113213 - 2⁶ = 501113149 is a prime.

It is a super-2 number, since 2×501113213² = 502228904486366738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 501113191 and 501113200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501113203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10893743 + ... + 10893788.

It is an arithmetic number, because the mean of its divisors is an integer number (130725192).

Almost surely, 2^501113213 is an apocalyptic number.

It is an amenable number.

501113213 is a deficient number, since it is larger than the sum of its proper divisors (21787555).

501113213 is a wasteful number, since it uses less digits than its factorization.

501113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21787554.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 501113213 is about 22385.5581346546. The cubic root of 501113213 is about 794.2891278696.

Adding to 501113213 its reverse (312311105), we get a palindrome (813424318).

The spelling of 501113213 in words is "five hundred one million, one hundred thirteen thousand, two hundred thirteen".