312223133103213 has 4 divisors (see below), whose sum is σ = 416297510804288. Its totient is φ = 208148755402140.

The previous prime is 312223133103209. The next prime is 312223133103221. The reversal of 312223133103213 is 312301331322213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 312223133103213 - 2² = 312223133103209 is a prime.

It is a super-2 number, since 2×312223133103213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312223133103913) 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, 52037188850533 + ... + 52037188850538.

It is an arithmetic number, because the mean of its divisors is an integer number (104074377701072).

Almost surely, 2^{312223133103213} is an apocalyptic number.

It is an amenable number.

312223133103213 is a deficient number, since it is larger than the sum of its proper divisors (104074377701075).

312223133103213 is a wasteful number, since it uses less digits than its factorization.

312223133103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104074377701074.

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 312223133103213 its reverse (312301331322213), we get a palindrome (624524464425426).

The spelling of 312223133103213 in words is "three hundred twelve trillion, two hundred twenty-three billion, one hundred thirty-three million, one hundred three thousand, two hundred thirteen".