31310112443 has 2 divisors, whose sum is σ = 31310112444. Its totient is φ = 31310112442.

The previous prime is 31310112409. The next prime is 31310112487. The reversal of 31310112443 is 34421101313.

It is a weak prime.

It is an emirp because it is prime and its reverse (34421101313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31310112443 - 2⁸ = 31310112187 is a prime.

It is not a weakly prime, because it can be changed into another prime (31310112403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655056221 + 15655056222.

It is an arithmetic number, because the mean of its divisors is an integer number (15655056222).

Almost surely, 2^31310112443 is an apocalyptic number.

31310112443 is a deficient number, since it is larger than the sum of its proper divisors (1).

31310112443 is an equidigital number, since it uses as much as digits as its factorization.

31310112443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31310112443 its reverse (34421101313), we get a palindrome (65731213756).

The spelling of 31310112443 in words is "thirty-one billion, three hundred ten million, one hundred twelve thousand, four hundred forty-three".