40444001031 has 8 divisors (see below), whose sum is σ = 61628953984. Its totient is φ = 23110857720.

The previous prime is 40444001023. The next prime is 40444001041. The reversal of 40444001031 is 13010044404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40444001031 - 2³ = 40444001023 is a prime.

It is a super-2 number, since 2×40444001031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1925904811 = 40444001031 / (4 + 0 + 4 + 4 + 4 + 0 + 0 + 1 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40444000989 and 40444001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444001041) 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 in 7 ways as a sum of consecutive naturals, for example, 962952385 + ... + 962952426.

It is an arithmetic number, because the mean of its divisors is an integer number (7703619248).

Almost surely, 2^40444001031 is an apocalyptic number.

40444001031 is a deficient number, since it is larger than the sum of its proper divisors (21184952953).

40444001031 is a wasteful number, since it uses less digits than its factorization.

40444001031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925904821.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40444001031 its reverse (13010044404), we get a palindrome (53454045435).

The spelling of 40444001031 in words is "forty billion, four hundred forty-four million, one thousand, thirty-one".