31000213213011 has 48 divisors (see below), whose sum is σ = 51241688050176. Its totient is φ = 17691311582208.

The previous prime is 31000213212959. The next prime is 31000213213117. The reversal of 31000213213011 is 11031231200013.

31000213213011 is a `hidden beast` number, since 310 + 0 + 0 + 2 + 1 + 321 + 30 + 1 + 1 = 666.

It is not a de Polignac number, because 31000213213011 - 2¹⁸ = 31000212950867 is a prime.

It is a super-2 number, since 2×31000213213011² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31000213113011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 839572396 + ... + 839609318.

It is an arithmetic number, because the mean of its divisors is an integer number (1067535167712).

Almost surely, 2^{31000213213011} is an apocalyptic number.

31000213213011 is a deficient number, since it is larger than the sum of its proper divisors (20241474837165).

31000213213011 is a wasteful number, since it uses less digits than its factorization.

31000213213011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53952 (or 53949 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31000213213011 its reverse (11031231200013), we get a palindrome (42031444413024).

The spelling of 31000213213011 in words is "thirty-one trillion, two hundred thirteen million, two hundred thirteen thousand, eleven".