31142444444443 has 2 divisors, whose sum is σ = 31142444444444. Its totient is φ = 31142444444442.

The previous prime is 31142444444417. The next prime is 31142444444497. The reversal of 31142444444443 is 34444444424113.

It is a weak prime.

It is an emirp because it is prime and its reverse (34444444424113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31142444444443 - 2⁹ = 31142444443931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31142444444393 and 31142444444402.

It is not a weakly prime, because it can be changed into another prime (31142444444143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571222222221 + 15571222222222.

It is an arithmetic number, because the mean of its divisors is an integer number (15571222222222).

Almost surely, 2^{31142444444443} is an apocalyptic number.

31142444444443 is a deficient number, since it is larger than the sum of its proper divisors (1).

31142444444443 is an equidigital number, since it uses as much as digits as its factorization.

31142444444443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4718592, while the sum is 46.

Adding to 31142444444443 its reverse (34444444424113), we get a palindrome (65586888868556).

The spelling of 31142444444443 in words is "thirty-one trillion, one hundred forty-two billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-three".