212311233231 has 16 divisors (see below), whose sum is σ = 285801868800. Its totient is φ = 140181401088.

The previous prime is 212311233217. The next prime is 212311233269. The reversal of 212311233231 is 132332113212.

It is not a de Polignac number, because 212311233231 - 2⁹ = 212311232719 is a prime.

It is a super-2 number, since 2×212311233231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212311233031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1173615 + ... + 1342383.

It is an arithmetic number, because the mean of its divisors is an integer number (17862616800).

Almost surely, 2^212311233231 is an apocalyptic number.

212311233231 is a deficient number, since it is larger than the sum of its proper divisors (73490635569).

212311233231 is a wasteful number, since it uses less digits than its factorization.

212311233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172798.

The product of its digits is 1296, while the sum is 24.

Adding to 212311233231 its reverse (132332113212), we get a palindrome (344643346443).

The spelling of 212311233231 in words is "two hundred twelve billion, three hundred eleven million, two hundred thirty-three thousand, two hundred thirty-one".