21023200130031 has 16 divisors (see below), whose sum is σ = 33976889099520. Its totient is φ = 12741333411960.

The previous prime is 21023200129957. The next prime is 21023200130083. The reversal of 21023200130031 is 13003100232012.

21023200130031 is a `hidden beast` number, since 2 + 10 + 2 + 320 + 0 + 1 + 300 + 31 = 666.

It is not a de Polignac number, because 21023200130031 - 2¹⁴ = 21023200113647 is a prime.

It is a super-2 number, since 2×21023200130031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21023200129986 and 21023200130013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023200130831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35392592515 + ... + 35392593108.

It is an arithmetic number, because the mean of its divisors is an integer number (2123555568720).

Almost surely, 2^{21023200130031} is an apocalyptic number.

21023200130031 is a deficient number, since it is larger than the sum of its proper divisors (12953688969489).

21023200130031 is a wasteful number, since it uses less digits than its factorization.

21023200130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70785185643 (or 70785185637 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21023200130031 its reverse (13003100232012), we get a palindrome (34026300362043).

The spelling of 21023200130031 in words is "twenty-one trillion, twenty-three billion, two hundred million, one hundred thirty thousand, thirty-one".