40444142831 has 2 divisors, whose sum is σ = 40444142832. Its totient is φ = 40444142830.

The previous prime is 40444142813. The next prime is 40444142857. The reversal of 40444142831 is 13824144404.

Together with previous prime (40444142813) 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 40444142831 - 2¹⁰ = 40444141807 is a prime.

It is a super-2 number, since 2×40444142831² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40444142791 and 40444142800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40444142731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222071415 + 20222071416.

It is an arithmetic number, because the mean of its divisors is an integer number (20222071416).

Almost surely, 2^40444142831 is an apocalyptic number.

40444142831 is a deficient number, since it is larger than the sum of its proper divisors (1).

40444142831 is an equidigital number, since it uses as much as digits as its factorization.

40444142831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49152, while the sum is 35.

The spelling of 40444142831 in words is "forty billion, four hundred forty-four million, one hundred forty-two thousand, eight hundred thirty-one".