212310031321 has 8 divisors (see below), whose sum is σ = 222253259904. Its totient is φ = 202426165920.

The previous prime is 212310031319. The next prime is 212310031369. The reversal of 212310031321 is 123130013212.

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 212310031321 - 2¹ = 212310031319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212310031121) 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, 14833476 + ... + 14847781.

It is an arithmetic number, because the mean of its divisors is an integer number (27781657488).

Almost surely, 2^212310031321 is an apocalyptic number.

It is an amenable number.

212310031321 is a deficient number, since it is larger than the sum of its proper divisors (9943228583).

212310031321 is a wasteful number, since it uses less digits than its factorization.

212310031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29681591.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212310031321 its reverse (123130013212), we get a palindrome (335440044533).

The spelling of 212310031321 in words is "two hundred twelve billion, three hundred ten million, thirty-one thousand, three hundred twenty-one".