21310103313 has 48 divisors (see below), whose sum is σ = 34650944640. Its totient is φ = 12548270592.

The previous prime is 21310103293. The next prime is 21310103317. The reversal of 21310103313 is 31330101312.

It is a happy number.

21310103313 is a `hidden beast` number, since 21 + 310 + 1 + 0 + 331 + 3 = 666.

It is not a de Polignac number, because 21310103313 - 2¹⁸ = 21309841169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21310103317) 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 47 ways as a sum of consecutive naturals, for example, 129378 + ... + 243636.

It is an arithmetic number, because the mean of its divisors is an integer number (721894680).

Almost surely, 2^21310103313 is an apocalyptic number.

21310103313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21310103313 is a deficient number, since it is larger than the sum of its proper divisors (13340841327).

21310103313 is a wasteful number, since it uses less digits than its factorization.

21310103313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114358 (or 114355 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21310103313 its reverse (31330101312), we get a palindrome (52640204625).

The spelling of 21310103313 in words is "twenty-one billion, three hundred ten million, one hundred three thousand, three hundred thirteen".