21031020131032 has 8 divisors (see below), whose sum is σ = 39433162745700. Its totient is φ = 10515510065512.

The previous prime is 21031020131021. The next prime is 21031020131041. The reversal of 21031020131032 is 23013102013012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1314438758182 + ... + 1314438758197.

Almost surely, 2^{21031020131032} is an apocalyptic number.

It is an amenable number.

21031020131032 is a deficient number, since it is larger than the sum of its proper divisors (18402142614668).

21031020131032 is a wasteful number, since it uses less digits than its factorization.

21031020131032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628877516385 (or 2628877516381 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21031020131032 its reverse (23013102013012), we get a palindrome (44044122144044).

The spelling of 21031020131032 in words is "twenty-one trillion, thirty-one billion, twenty million, one hundred thirty-one thousand, thirty-two".