312103231213 has 8 divisors (see below), whose sum is σ = 312559831800. Its totient is φ = 311646924288.

The previous prime is 312103231211. The next prime is 312103231249. The reversal of 312103231213 is 312132301213.

It can be written as a sum of positive squares in 4 ways, for example, as 18758589444 + 293344641769 = 136962^2 + 541613^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312103231213 - 2¹ = 312103231211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312103231211) 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, 2100543 + ... + 2244211.

It is an arithmetic number, because the mean of its divisors is an integer number (39069978975).

Almost surely, 2^312103231213 is an apocalyptic number.

It is an amenable number.

312103231213 is a deficient number, since it is larger than the sum of its proper divisors (456600587).

312103231213 is a wasteful number, since it uses less digits than its factorization.

312103231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146831.

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

Adding to 312103231213 its reverse (312132301213), we get a palindrome (624235532426).

The spelling of 312103231213 in words is "three hundred twelve billion, one hundred three million, two hundred thirty-one thousand, two hundred thirteen".