311431244420231 has 16 divisors (see below), whose sum is σ = 339634578514560. Its totient is φ = 283834672542720.

The previous prime is 311431244420171. The next prime is 311431244420243. The reversal of 311431244420231 is 132024442134113.

It is not a de Polignac number, because 311431244420231 - 2¹⁴ = 311431244403847 is a prime.

It is a super-2 number, since 2×311431244420231² (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 = 311431244420191 and 311431244420200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311431244420431) 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, 248188541 + ... + 249440201.

It is an arithmetic number, because the mean of its divisors is an integer number (21227161157160).

Almost surely, 2^{311431244420231} is an apocalyptic number.

311431244420231 is a deficient number, since it is larger than the sum of its proper divisors (28203334094329).

311431244420231 is a wasteful number, since it uses less digits than its factorization.

311431244420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494026.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 311431244420231 its reverse (132024442134113), we get a palindrome (443455686554344).

The spelling of 311431244420231 in words is "three hundred eleven trillion, four hundred thirty-one billion, two hundred forty-four million, four hundred twenty thousand, two hundred thirty-one".