21031130313103 has 8 divisors (see below), whose sum is σ = 21756427520400. Its totient is φ = 20305838827008.

The previous prime is 21031130313091. The next prime is 21031130313107. The reversal of 21031130313103 is 30131303113012.

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

It is a cyclic number.

It is not a de Polignac number, because 21031130313103 - 2²⁹ = 21030593442191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031130313107) 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, 6863728 + ... + 9443146.

It is an arithmetic number, because the mean of its divisors is an integer number (2719553440050).

Almost surely, 2^{21031130313103} is an apocalyptic number.

21031130313103 is a deficient number, since it is larger than the sum of its proper divisors (725297207297).

21031130313103 is a wasteful number, since it uses less digits than its factorization.

21031130313103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860601.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 21031130313103 its reverse (30131303113012), we get a palindrome (51162433426115).

The spelling of 21031130313103 in words is "twenty-one trillion, thirty-one billion, one hundred thirty million, three hundred thirteen thousand, one hundred three".