31311012102205 has 32 divisors (see below), whose sum is σ = 42016933744128. Its totient is φ = 22201296499200.

The previous prime is 31311012102193. The next prime is 31311012102217. The reversal of 31311012102205 is 50220121011313.

It is an interprime number because it is at equal distance from previous prime (31311012102193) and next prime (31311012102217).

It is not a de Polignac number, because 31311012102205 - 2¹¹ = 31311012100157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1315662 + ... + 8022031.

It is an arithmetic number, because the mean of its divisors is an integer number (1313029179504).

Almost surely, 2^{31311012102205} is an apocalyptic number.

It is an amenable number.

31311012102205 is a deficient number, since it is larger than the sum of its proper divisors (10705921641923).

31311012102205 is a wasteful number, since it uses less digits than its factorization.

31311012102205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339237.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 31311012102205 its reverse (50220121011313), we get a palindrome (81531133113518).

The spelling of 31311012102205 in words is "thirty-one trillion, three hundred eleven billion, twelve million, one hundred two thousand, two hundred five".