231312311206 has 16 divisors (see below), whose sum is σ = 347306720400. Its totient is φ = 115543457568.

The previous prime is 231312311201. The next prime is 231312311221. The reversal of 231312311206 is 602113213132.

It is a happy number.

231312311206 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231312311206² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231312311201) 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, 10691656 + ... + 10713268.

It is an arithmetic number, because the mean of its divisors is an integer number (21706670025).

Almost surely, 2^231312311206 is an apocalyptic number.

231312311206 is a deficient number, since it is larger than the sum of its proper divisors (115994409194).

231312311206 is a wasteful number, since it uses less digits than its factorization.

231312311206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26583.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 231312311206 its reverse (602113213132), we get a palindrome (833425524338).

The spelling of 231312311206 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred eleven thousand, two hundred six".