311232131022101 has 4 divisors (see below), whose sum is σ = 311232237080652. Its totient is φ = 311232024963552.

The previous prime is 311232131022083. The next prime is 311232131022151. The reversal of 311232131022101 is 101220131232113.

It is a happy number.

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 243273458895076 + 67958672127025 = 15597226^2 + 8243705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311232131022101 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 (311232131022151) 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, 48498440 + ... + 54539553.

It is an arithmetic number, because the mean of its divisors is an integer number (77808059270163).

Almost surely, 2^{311232131022101} is an apocalyptic number.

It is an amenable number.

311232131022101 is a deficient number, since it is larger than the sum of its proper divisors (106058551).

311232131022101 is a wasteful number, since it uses less digits than its factorization.

311232131022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106058550.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 311232131022101 its reverse (101220131232113), we get a palindrome (412452262254214).

The spelling of 311232131022101 in words is "three hundred eleven trillion, two hundred thirty-two billion, one hundred thirty-one million, twenty-two thousand, one hundred one".