311223400004434 has 16 divisors (see below), whose sum is σ = 467397199553760. Its totient is φ = 155424444589440.

The previous prime is 311223400004273. The next prime is 311223400004437. The reversal of 311223400004434 is 434400004322113.

It is a super-2 number, since 2×311223400004434² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311223400004396 and 311223400004405.

It is not an unprimeable number, because it can be changed into a prime (311223400004437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22171272 + ... + 33376819.

It is an arithmetic number, because the mean of its divisors is an integer number (29212324972110).

Almost surely, 2^{311223400004434} is an apocalyptic number.

311223400004434 is a deficient number, since it is larger than the sum of its proper divisors (156173799549326).

311223400004434 is a wasteful number, since it uses less digits than its factorization.

311223400004434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55551465.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 311223400004434 its reverse (434400004322113), we get a palindrome (745623404326547).

The spelling of 311223400004434 in words is "three hundred eleven trillion, two hundred twenty-three billion, four hundred million, four thousand, four hundred thirty-four".