311312204224231 has 16 divisors (see below), whose sum is σ = 370398129503040. Its totient is φ = 255996681857280.

The previous prime is 311312204224201. The next prime is 311312204224237. The reversal of 311312204224231 is 132422402213113.

It is not a de Polignac number, because 311312204224231 - 2⁵ = 311312204224199 is a prime.

It is a super-2 number, since 2×311312204224231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311312204224193 and 311312204224202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311312204224237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4883909710 + ... + 4883973451.

It is an arithmetic number, because the mean of its divisors is an integer number (23149883093940).

Almost surely, 2^{311312204224231} is an apocalyptic number.

311312204224231 is a deficient number, since it is larger than the sum of its proper divisors (59085925278809).

311312204224231 is a wasteful number, since it uses less digits than its factorization.

311312204224231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9767883354.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 311312204224231 its reverse (132422402213113), we get a palindrome (443734606437344).

The spelling of 311312204224231 in words is "three hundred eleven trillion, three hundred twelve billion, two hundred four million, two hundred twenty-four thousand, two hundred thirty-one".