311110404431 has 4 divisors (see below), whose sum is σ = 311193882912. Its totient is φ = 311026925952.

The previous prime is 311110404427. The next prime is 311110404439. The reversal of 311110404431 is 134404011113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134404011113 = 383 ⋅350924311.

It is a cyclic number.

It is not a de Polignac number, because 311110404431 - 2² = 311110404427 is a prime.

It is a super-2 number, since 2×311110404431² (a number of 24 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 = 311110404397 and 311110404406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311110404439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41733650 + ... + 41741103.

It is an arithmetic number, because the mean of its divisors is an integer number (77798470728).

Almost surely, 2^311110404431 is an apocalyptic number.

311110404431 is a deficient number, since it is larger than the sum of its proper divisors (83478481).

311110404431 is an equidigital number, since it uses as much as digits as its factorization.

311110404431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83478480.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 311110404431 its reverse (134404011113), we get a palindrome (445514415544).

The spelling of 311110404431 in words is "three hundred eleven billion, one hundred ten million, four hundred four thousand, four hundred thirty-one".