31344441413 has 2 divisors, whose sum is σ = 31344441414. Its totient is φ = 31344441412.

The previous prime is 31344441409. The next prime is 31344441433. The reversal of 31344441413 is 31414444313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31188266404 + 156175009 = 176602^2 + 12497^2 .

It is a cyclic number.

It is not a de Polignac number, because 31344441413 - 2² = 31344441409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31344441413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31344441433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15672220706 + 15672220707.

It is an arithmetic number, because the mean of its divisors is an integer number (15672220707).

Almost surely, 2^31344441413 is an apocalyptic number.

It is an amenable number.

31344441413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31344441413 is an equidigital number, since it uses as much as digits as its factorization.

31344441413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 32.

Adding to 31344441413 its reverse (31414444313), we get a palindrome (62758885726).

The spelling of 31344441413 in words is "thirty-one billion, three hundred forty-four million, four hundred forty-one thousand, four hundred thirteen".