31144020335005 has 8 divisors (see below), whose sum is σ = 37425536429400. Its totient is φ = 24880074916416.

The previous prime is 31144020335003. The next prime is 31144020335011. The reversal of 31144020335005 is 50053302044113.

It can be written as a sum of positive squares in 4 ways, for example, as 3652643393721 + 27491376941284 = 1911189^2 + 5243222^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31144020335005 - 2¹ = 31144020335003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144020335003) 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, 4392665050 + ... + 4392672139.

It is an arithmetic number, because the mean of its divisors is an integer number (4678192053675).

Almost surely, 2^{31144020335005} is an apocalyptic number.

It is an amenable number.

31144020335005 is a deficient number, since it is larger than the sum of its proper divisors (6281516094395).

31144020335005 is an equidigital number, since it uses as much as digits as its factorization.

31144020335005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8785337903.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 31144020335005 its reverse (50053302044113), we get a palindrome (81197322379118).

The spelling of 31144020335005 in words is "thirty-one trillion, one hundred forty-four billion, twenty million, three hundred thirty-five thousand, five".