231312210313 has 2 divisors, whose sum is σ = 231312210314. Its totient is φ = 231312210312.

The previous prime is 231312210301. The next prime is 231312210361. The reversal of 231312210313 is 313012213132.

231312210313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220461238089 + 10850972224 = 469533^2 + 104168^2 .

It is a cyclic number.

It is not a de Polignac number, because 231312210313 - 2²¹ = 231310113161 is a prime.

It is not a weakly prime, because it can be changed into another prime (231312210373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656105156 + 115656105157.

It is an arithmetic number, because the mean of its divisors is an integer number (115656105157).

Almost surely, 2^231312210313 is an apocalyptic number.

It is an amenable number.

231312210313 is a deficient number, since it is larger than the sum of its proper divisors (1).

231312210313 is an equidigital number, since it uses as much as digits as its factorization.

231312210313 is an odious number, because the sum of its binary digits is odd.

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

Adding to 231312210313 its reverse (313012213132), we get a palindrome (544324423445).

The spelling of 231312210313 in words is "two hundred thirty-one billion, three hundred twelve million, two hundred ten thousand, three hundred thirteen".