212312331331 has 4 divisors (see below), whose sum is σ = 212359318000. Its totient is φ = 212265344664.

The previous prime is 212312331307. The next prime is 212312331359. The reversal of 212312331331 is 133133213212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212312331331 - 2⁵ = 212312331299 is a prime.

It is a super-2 number, since 2×212312331331² (a number of 23 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 = 212312331296 and 212312331305.

It is not an unprimeable number, because it can be changed into a prime (212312331031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23486556 + ... + 23495593.

It is an arithmetic number, because the mean of its divisors is an integer number (53089829500).

Almost surely, 2^212312331331 is an apocalyptic number.

212312331331 is a deficient number, since it is larger than the sum of its proper divisors (46986669).

212312331331 is an equidigital number, since it uses as much as digits as its factorization.

212312331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46986668.

The product of its digits is 1944, while the sum is 25.

Adding to 212312331331 its reverse (133133213212), we get a palindrome (345445544543).

The spelling of 212312331331 in words is "two hundred twelve billion, three hundred twelve million, three hundred thirty-one thousand, three hundred thirty-one".