213130331 has 8 divisors (see below), whose sum is σ = 217455840. Its totient is φ = 208816192.

The previous prime is 213130327. The next prime is 213130409. The reversal of 213130331 is 133031312.

213130331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 213130331 - 2² = 213130327 is a prime.

It is a super-2 number, since 2×213130331² = 90849075984339122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213130031) 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, 42071 + ... + 46863.

It is an arithmetic number, because the mean of its divisors is an integer number (27181980).

Almost surely, 2^213130331 is an apocalyptic number.

213130331 is a deficient number, since it is larger than the sum of its proper divisors (4325509).

213130331 is an equidigital number, since it uses as much as digits as its factorization.

213130331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 213130331 is about 14598.9839029982. The cubic root of 213130331 is about 597.3310444716.

Adding to 213130331 its reverse (133031312), we get a palindrome (346161643).

The spelling of 213130331 in words is "two hundred thirteen million, one hundred thirty thousand, three hundred thirty-one".