31002142205 has 8 divisors (see below), whose sum is σ = 39160600800. Its totient is φ = 23496360336.

The previous prime is 31002142201. The next prime is 31002142219. The reversal of 31002142205 is 50224120013.

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

It is not a de Polignac number, because 31002142205 - 2² = 31002142201 is a prime.

It is a super-2 number, since 2×31002142205² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002142201) 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, 163169075 + ... + 163169264.

It is an arithmetic number, because the mean of its divisors is an integer number (4895075100).

Almost surely, 2^31002142205 is an apocalyptic number.

It is an amenable number.

31002142205 is a deficient number, since it is larger than the sum of its proper divisors (8158458595).

31002142205 is a wasteful number, since it uses less digits than its factorization.

31002142205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326338363.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 31002142205 its reverse (50224120013), we get a palindrome (81226262218).

The spelling of 31002142205 in words is "thirty-one billion, two million, one hundred forty-two thousand, two hundred five".