21310130231 has 8 divisors (see below), whose sum is σ = 23225870640. Its totient is φ = 19433889792.

The previous prime is 21310130183. The next prime is 21310130239. The reversal of 21310130231 is 13203101312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21310130231 is a prime.

It is a super-2 number, since 2×21310130231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310130239) 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 7 ways as a sum of consecutive naturals, for example, 9873866 + ... + 9876023.

It is an arithmetic number, because the mean of its divisors is an integer number (2903233830).

Almost surely, 2^21310130231 is an apocalyptic number.

21310130231 is a deficient number, since it is larger than the sum of its proper divisors (1915740409).

21310130231 is a wasteful number, since it uses less digits than its factorization.

21310130231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19749985.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21310130231 its reverse (13203101312), we get a palindrome (34513231543).

The spelling of 21310130231 in words is "twenty-one billion, three hundred ten million, one hundred thirty thousand, two hundred thirty-one".