311442104243031 has 4 divisors (see below), whose sum is σ = 415256138990712. Its totient is φ = 207628069495352.

The previous prime is 311442104243009. The next prime is 311442104243063. The reversal of 311442104243031 is 130342401244113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311442104243031 - 2²³ = 311442095854423 is a prime.

It is a super-2 number, since 2×311442104243031² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311442104242983 and 311442104243001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311442100243031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51907017373836 + ... + 51907017373841.

It is an arithmetic number, because the mean of its divisors is an integer number (103814034747678).

Almost surely, 2^{311442104243031} is an apocalyptic number.

311442104243031 is a deficient number, since it is larger than the sum of its proper divisors (103814034747681).

311442104243031 is a wasteful number, since it uses less digits than its factorization.

311442104243031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103814034747680.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 311442104243031 its reverse (130342401244113), we get a palindrome (441784505487144).

The spelling of 311442104243031 in words is "three hundred eleven trillion, four hundred forty-two billion, one hundred four million, two hundred forty-three thousand, thirty-one".