213001331 has 8 divisors (see below), whose sum is σ = 214443600. Its totient is φ = 211564512.

The previous prime is 213001303. The next prime is 213001363. The reversal of 213001331 is 133100312.

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-213001331 is a prime.

It is a super-2 number, since 2×213001331² = 90739134015543122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213001531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101216 + ... + 103298.

It is an arithmetic number, because the mean of its divisors is an integer number (26805450).

Almost surely, 2^213001331 is an apocalyptic number.

213001331 is a deficient number, since it is larger than the sum of its proper divisors (1442269).

213001331 is a wasteful number, since it uses less digits than its factorization.

213001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 213001331 is about 14594.5651185638. The cubic root of 213001331 is about 597.2105059324.

Adding to 213001331 its reverse (133100312), we get a palindrome (346101643).

The spelling of 213001331 in words is "two hundred thirteen million, one thousand, three hundred thirty-one".