212331331 has 8 divisors (see below), whose sum is σ = 222292224. Its totient is φ = 202431240.

The previous prime is 212331323. The next prime is 212331349. The reversal of 212331331 is 133133212.

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 212331331 - 2³ = 212331323 is a prime.

It is a super-2 number, since 2×212331331² = 90169188248463122, 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 = 212331299 and 212331308.

It is not an unprimeable number, because it can be changed into a prime (212331731) 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, 7975 + ... + 22096.

It is an arithmetic number, because the mean of its divisors is an integer number (27786528).

Almost surely, 2^212331331 is an apocalyptic number.

212331331 is a deficient number, since it is larger than the sum of its proper divisors (9960893).

212331331 is a wasteful number, since it uses less digits than its factorization.

212331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30401.

The product of its digits is 324, while the sum is 19.

The square root of 212331331 is about 14571.5932896852. The cubic root of 212331331 is about 596.5836689827.

Adding to 212331331 its reverse (133133212), we get a palindrome (345464543).

The spelling of 212331331 in words is "two hundred twelve million, three hundred thirty-one thousand, three hundred thirty-one".