31004442001 has 8 divisors (see below), whose sum is σ = 33936767144. Its totient is φ = 28150312320.

The previous prime is 31004441999. The next prime is 31004442011. The reversal of 31004442001 is 10024440013.

It can be written as a sum of positive squares in 4 ways, for example, as 28090000 + 30976352001 = 5300^2 + 176001^2 .

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

It is not a de Polignac number, because 31004442001 - 2¹ = 31004441999 is a prime.

It is a super-2 number, since 2×31004442001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31004442001.

It is not an unprimeable number, because it can be changed into a prime (31004442011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19548036 + ... + 19549621.

It is an arithmetic number, because the mean of its divisors is an integer number (4242095893).

Almost surely, 2^31004442001 is an apocalyptic number.

It is an amenable number.

31004442001 is a deficient number, since it is larger than the sum of its proper divisors (2932325143).

31004442001 is a wasteful number, since it uses less digits than its factorization.

31004442001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39097731.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 31004442001 its reverse (10024440013), we get a palindrome (41028882014).

The spelling of 31004442001 in words is "thirty-one billion, four million, four hundred forty-two thousand, one".