212331231310 has 64 divisors (see below), whose sum is σ = 441550393344. Its totient is φ = 72655833600.

The previous prime is 212331231289. The next prime is 212331231367. The reversal of 212331231310 is 13132133212.

It is a super-2 number, since 2×212331231310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18453019 + ... + 18464521.

It is an arithmetic number, because the mean of its divisors is an integer number (6899224896).

Almost surely, 2^212331231310 is an apocalyptic number.

212331231310 is an abundant number, since it is smaller than the sum of its proper divisors (229219162034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212331231310 is a wasteful number, since it uses less digits than its factorization.

212331231310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21409.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 212331231310 its reverse (13132133212), we get a palindrome (225463364522).

The spelling of 212331231310 in words is "two hundred twelve billion, three hundred thirty-one million, two hundred thirty-one thousand, three hundred ten".