21302310011031 has 16 divisors (see below), whose sum is σ = 36067403193600. Its totient is φ = 12172748577624.

The previous prime is 21302310011029. The next prime is 21302310011077. The reversal of 21302310011031 is 13011001320312.

21302310011031 is a `hidden beast` number, since 21 + 302 + 310 + 0 + 1 + 1 + 0 + 31 = 666.

It is not a de Polignac number, because 21302310011031 - 2¹ = 21302310011029 is a prime.

It is a super-2 number, since 2×21302310011031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21302310010995 and 21302310011013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302310091031) 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, 56355317301 + ... + 56355317678.

It is an arithmetic number, because the mean of its divisors is an integer number (2254212699600).

Almost surely, 2^{21302310011031} is an apocalyptic number.

21302310011031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21302310011031 is a deficient number, since it is larger than the sum of its proper divisors (14765093182569).

21302310011031 is a wasteful number, since it uses less digits than its factorization.

21302310011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112710634995 (or 112710634989 counting only the distinct ones).

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

Adding to 21302310011031 its reverse (13011001320312), we get a palindrome (34313311331343).

The spelling of 21302310011031 in words is "twenty-one trillion, three hundred two billion, three hundred ten million, eleven thousand, thirty-one".