21031033134312 has 48 divisors (see below), whose sum is σ = 60309580315140. Its totient is φ = 6597971179008.

The previous prime is 21031033134301. The next prime is 21031033134313. The reversal of 21031033134312 is 21343133013012.

21031033134312 is a `hidden beast` number, since 2 + 1 + 0 + 3 + 10 + 331 + 3 + 4 + 312 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20897643103236 + 133390031076 = 4571394^2 + 365226^2 .

It is not an unprimeable number, because it can be changed into a prime (21031033134313) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8591107083 + ... + 8591109530.

Almost surely, 2^{21031033134312} is an apocalyptic number.

It is an amenable number.

21031033134312 is an abundant number, since it is smaller than the sum of its proper divisors (39278547180828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21031033134312 is a wasteful number, since it uses less digits than its factorization.

21031033134312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17182216642 (or 17182216635 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21031033134312 its reverse (21343133013012), we get a palindrome (42374166147324).

The spelling of 21031033134312 in words is "twenty-one trillion, thirty-one billion, thirty-three million, one hundred thirty-four thousand, three hundred twelve".