213332331 has 8 divisors (see below), whose sum is σ = 291058240. Its totient is φ = 138913992.

The previous prime is 213332309. The next prime is 213332341. The reversal of 213332331 is 133233312.

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

It is not a de Polignac number, because 213332331 - 2⁶ = 213332267 is a prime.

It is a super-2 number, since 2×213332331² = 91021366899787122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213332298 and 213332307.

It is not an unprimeable number, because it can be changed into a prime (213332341) 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, 826741 + ... + 826998.

It is an arithmetic number, because the mean of its divisors is an integer number (36382280).

Almost surely, 2^213332331 is an apocalyptic number.

213332331 is a deficient number, since it is larger than the sum of its proper divisors (77725909).

213332331 is a wasteful number, since it uses less digits than its factorization.

213332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653785.

The product of its digits is 972, while the sum is 21.

The square root of 213332331 is about 14605.9005542281. The cubic root of 213332331 is about 597.5196970684.

Adding to 213332331 its reverse (133233312), we get a palindrome (346565643).

The spelling of 213332331 in words is "two hundred thirteen million, three hundred thirty-two thousand, three hundred thirty-one".