501331213 has 8 divisors (see below), whose sum is σ = 508930560. Its totient is φ = 493746960.

The previous prime is 501331199. The next prime is 501331249. The reversal of 501331213 is 312133105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501331213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501331013) 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, 75556 + ... + 81922.

It is an arithmetic number, because the mean of its divisors is an integer number (63616320).

Almost surely, 2^501331213 is an apocalyptic number.

It is an amenable number.

501331213 is a deficient number, since it is larger than the sum of its proper divisors (7599347).

501331213 is a wasteful number, since it uses less digits than its factorization.

501331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7547.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 501331213 is about 22390.4268159408. The cubic root of 501331213 is about 794.4042914175.

Adding to 501331213 its reverse (312133105), we get a palindrome (813464318).

The spelling of 501331213 in words is "five hundred one million, three hundred thirty-one thousand, two hundred thirteen".