40444440031 has 2 divisors, whose sum is σ = 40444440032. Its totient is φ = 40444440030.

The previous prime is 40444440013. The next prime is 40444440089. The reversal of 40444440031 is 13004444404.

Together with previous prime (40444440013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40444440031 - 2¹¹ = 40444437983 is a prime.

It is a super-2 number, since 2×40444440031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40444440131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222220015 + 20222220016.

It is an arithmetic number, because the mean of its divisors is an integer number (20222220016).

Almost surely, 2^40444440031 is an apocalyptic number.

40444440031 is a deficient number, since it is larger than the sum of its proper divisors (1).

40444440031 is an equidigital number, since it uses as much as digits as its factorization.

40444440031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 40444440031 its reverse (13004444404), we get a palindrome (53448884435).

The spelling of 40444440031 in words is "forty billion, four hundred forty-four million, four hundred forty thousand, thirty-one".