312012231313 has 4 divisors (see below), whose sum is σ = 315101461428. Its totient is φ = 308923001200.

The previous prime is 312012231287. The next prime is 312012231361. The reversal of 312012231313 is 313132210213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 155119397904 + 156892833409 = 393852^2 + 396097^2 .

It is a cyclic number.

It is not a de Polignac number, because 312012231313 - 2⁵ = 312012231281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312012231613) 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, 1544614906 + ... + 1544615107.

It is an arithmetic number, because the mean of its divisors is an integer number (78775365357).

Almost surely, 2^312012231313 is an apocalyptic number.

It is an amenable number.

312012231313 is a deficient number, since it is larger than the sum of its proper divisors (3089230115).

312012231313 is a wasteful number, since it uses less digits than its factorization.

312012231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089230114.

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

Adding to 312012231313 its reverse (313132210213), we get a palindrome (625144441526).

The spelling of 312012231313 in words is "three hundred twelve billion, twelve million, two hundred thirty-one thousand, three hundred thirteen".