31032145143205 has 8 divisors (see below), whose sum is σ = 37253345537304. Its totient is φ = 24815868537600.

The previous prime is 31032145143157. The next prime is 31032145143211. The reversal of 31032145143205 is 50234154123013.

It can be written as a sum of positive squares in 4 ways, for example, as 1958146838244 + 29073998304961 = 1399338^2 + 5392031^2 .

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

It is not a de Polignac number, because 31032145143205 - 2⁹ = 31032145142693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230933256 + ... + 1230958465.

It is an arithmetic number, because the mean of its divisors is an integer number (4656668192163).

Almost surely, 2^{31032145143205} is an apocalyptic number.

It is an amenable number.

31032145143205 is a deficient number, since it is larger than the sum of its proper divisors (6221200394099).

31032145143205 is a wasteful number, since it uses less digits than its factorization.

31032145143205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461894247.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 31032145143205 its reverse (50234154123013), we get a palindrome (81266299266218).

The spelling of 31032145143205 in words is "thirty-one trillion, thirty-two billion, one hundred forty-five million, one hundred forty-three thousand, two hundred five".