311132031211021 has 8 divisors (see below), whose sum is σ = 311374152331704. Its totient is φ = 310889993145600.

The previous prime is 311132031210991. The next prime is 311132031211037. The reversal of 311132031211021 is 120112130231113.

It can be written as a sum of positive squares in 4 ways, for example, as 67520962488996 + 243611068722025 = 8217114^2 + 15608045^2 .

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 311132031211021 - 2¹⁹ = 311132030686733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311132031210983 and 311132031211001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311132031211121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13267680 + ... + 28254121.

It is an arithmetic number, because the mean of its divisors is an integer number (38921769041463).

Almost surely, 2^{311132031211021} is an apocalyptic number.

It is an amenable number.

311132031211021 is a deficient number, since it is larger than the sum of its proper divisors (242121120683).

311132031211021 is a wasteful number, since it uses less digits than its factorization.

311132031211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41527631.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 311132031211021 its reverse (120112130231113), we get a palindrome (431244161442134).

The spelling of 311132031211021 in words is "three hundred eleven trillion, one hundred thirty-two billion, thirty-one million, two hundred eleven thousand, twenty-one".