21313040103 has 12 divisors (see below), whose sum is σ = 30825966288. Its totient is φ = 14190017760.

The previous prime is 21313040101. The next prime is 21313040117. The reversal of 21313040103 is 30104031312.

It is not a de Polignac number, because 21313040103 - 2¹ = 21313040101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313040101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1549075 + ... + 1562772.

It is an arithmetic number, because the mean of its divisors is an integer number (2568830524).

Almost surely, 2^21313040103 is an apocalyptic number.

21313040103 is a deficient number, since it is larger than the sum of its proper divisors (9512926185).

21313040103 is a wasteful number, since it uses less digits than its factorization.

21313040103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112614 (or 3112611 counting only the distinct ones).

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

Adding to 21313040103 its reverse (30104031312), we get a palindrome (51417071415).

The spelling of 21313040103 in words is "twenty-one billion, three hundred thirteen million, forty thousand, one hundred three".