212220323031313 has 4 divisors (see below), whose sum is σ = 212223355210048. Its totient is φ = 212217290852580.

The previous prime is 212220323031247. The next prime is 212220323031401. The reversal of 212220323031313 is 313130323022212.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212220323031313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212220323035313) 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, 1515984381 + ... + 1516124362.

It is an arithmetic number, because the mean of its divisors is an integer number (53055838802512).

Almost surely, 2^{212220323031313} is an apocalyptic number.

It is an amenable number.

212220323031313 is a deficient number, since it is larger than the sum of its proper divisors (3032178735).

212220323031313 is an equidigital number, since it uses as much as digits as its factorization.

212220323031313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032178734.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 212220323031313 its reverse (313130323022212), we get a palindrome (525350646053525).

The spelling of 212220323031313 in words is "two hundred twelve trillion, two hundred twenty billion, three hundred twenty-three million, thirty-one thousand, three hundred thirteen".