31442344403 has 2 divisors, whose sum is σ = 31442344404. Its totient is φ = 31442344402.

The previous prime is 31442344399. The next prime is 31442344429. The reversal of 31442344403 is 30444324413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31442344403 - 2² = 31442344399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31442344403.

It is not a weakly prime, because it can be changed into another prime (31442344433) 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 as a sum of consecutive naturals, namely, 15721172201 + 15721172202.

It is an arithmetic number, because the mean of its divisors is an integer number (15721172202).

Almost surely, 2^31442344403 is an apocalyptic number.

31442344403 is a deficient number, since it is larger than the sum of its proper divisors (1).

31442344403 is an equidigital number, since it uses as much as digits as its factorization.

31442344403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 31442344403 its reverse (30444324413), we get a palindrome (61886668816).

The spelling of 31442344403 in words is "thirty-one billion, four hundred forty-two million, three hundred forty-four thousand, four hundred three".