311303012012231 has 16 divisors (see below), whose sum is σ = 323123956835328. Its totient is φ = 299692824194400.

The previous prime is 311303012012197. The next prime is 311303012012243. The reversal of 311303012012231 is 132210210303113.

It is a cyclic number.

It is not a de Polignac number, because 311303012012231 - 2²⁶ = 311302944903367 is a prime.

It is a super-2 number, since 2×311303012012231² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311303012012197 and 311303012012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311303012012281) 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, 4562660 + ... + 25365801.

It is an arithmetic number, because the mean of its divisors is an integer number (20195247302208).

Almost surely, 2^{311303012012231} is an apocalyptic number.

311303012012231 is a deficient number, since it is larger than the sum of its proper divisors (11820944823097).

311303012012231 is a wasteful number, since it uses less digits than its factorization.

311303012012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29931982.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 311303012012231 its reverse (132210210303113), we get a palindrome (443513222315344).

The spelling of 311303012012231 in words is "three hundred eleven trillion, three hundred three billion, twelve million, twelve thousand, two hundred thirty-one".