212312321220031 has 8 divisors (see below), whose sum is σ = 213615355662720. Its totient is φ = 211009292934552.

The previous prime is 212312321220023. The next prime is 212312321220049. The reversal of 212312321220031 is 130022123213212.

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 212312321220031 - 2³ = 212312321220023 is a prime.

It is a super-2 number, since 2×212312321220031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212312321219978 and 212312321220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212312321220071) 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, 81260940 + ... + 83832958.

It is an arithmetic number, because the mean of its divisors is an integer number (26701919457840).

Almost surely, 2^{212312321220031} is an apocalyptic number.

212312321220031 is a deficient number, since it is larger than the sum of its proper divisors (1303034442689).

212312321220031 is a wasteful number, since it uses less digits than its factorization.

212312321220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078605.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 212312321220031 its reverse (130022123213212), we get a palindrome (342334444433243).

The spelling of 212312321220031 in words is "two hundred twelve trillion, three hundred twelve billion, three hundred twenty-one million, two hundred twenty thousand, thirty-one".