213131330 has 8 divisors (see below), whose sum is σ = 383636412. Its totient is φ = 85252528.

The previous prime is 213131327. The next prime is 213131333. The reversal of 213131330 is 33131312.

It is an interprime number because it is at equal distance from previous prime (213131327) and next prime (213131333).

It can be written as a sum of positive squares in 2 ways, for example, as 213130801 + 529 = 14599^2 + 23^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 213131299 and 213131308.

It is not an unprimeable number, because it can be changed into a prime (213131333) 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, 10656557 + ... + 10656576.

Almost surely, 2^213131330 is an apocalyptic number.

213131330 is a deficient number, since it is larger than the sum of its proper divisors (170505082).

213131330 is a wasteful number, since it uses less digits than its factorization.

213131330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21313140.

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

The square root of 213131330 is about 14599.0181176681. The cubic root of 213131330 is about 597.3319777547.

Adding to 213131330 its reverse (33131312), we get a palindrome (246262642).

The spelling of 213131330 in words is "two hundred thirteen million, one hundred thirty-one thousand, three hundred thirty".