31124020444009 has 2 divisors, whose sum is σ = 31124020444010. Its totient is φ = 31124020444008.

The previous prime is 31124020443959. The next prime is 31124020444057. The reversal of 31124020444009 is 90044402042113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28163951808784 + 2960068635225 = 5306972^2 + 1720485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31124020444009 is a prime.

It is not a weakly prime, because it can be changed into another prime (31124020444109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15562010222004 + 15562010222005.

It is an arithmetic number, because the mean of its divisors is an integer number (15562010222005).

Almost surely, 2^{31124020444009} is an apocalyptic number.

It is an amenable number.

31124020444009 is a deficient number, since it is larger than the sum of its proper divisors (1).

31124020444009 is an equidigital number, since it uses as much as digits as its factorization.

31124020444009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 31124020444009 in words is "thirty-one trillion, one hundred twenty-four billion, twenty million, four hundred forty-four thousand, nine".