311322101213 has 8 divisors (see below), whose sum is σ = 325895736768. Its totient is φ = 296834956704.

The previous prime is 311322101173. The next prime is 311322101249. The reversal of 311322101213 is 312101223113.

It is a happy number.

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 311322101213 - 2²² = 311317906909 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 (311322101263) 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, 21615395 + ... + 21629792.

It is an arithmetic number, because the mean of its divisors is an integer number (40736967096).

Almost surely, 2^311322101213 is an apocalyptic number.

It is an amenable number.

311322101213 is a deficient number, since it is larger than the sum of its proper divisors (14573635555).

311322101213 is a wasteful number, since it uses less digits than its factorization.

311322101213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43245523.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311322101213 its reverse (312101223113), we get a palindrome (623423324326).

The spelling of 311322101213 in words is "three hundred eleven billion, three hundred twenty-two million, one hundred one thousand, two hundred thirteen".