21313002104 has 16 divisors (see below), whose sum is σ = 39968299800. Its totient is φ = 10654788832.

The previous prime is 21313002101. The next prime is 21313002121. The reversal of 21313002104 is 40120031312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313002101) 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 3 ways as a sum of consecutive naturals, for example, 160334 + ... + 261405.

Almost surely, 2^21313002104 is an apocalyptic number.

It is an amenable number.

21313002104 is a deficient number, since it is larger than the sum of its proper divisors (18655297696).

21313002104 is a wasteful number, since it uses less digits than its factorization.

21313002104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428062 (or 428058 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21313002104 its reverse (40120031312), we get a palindrome (61433033416).

The spelling of 21313002104 in words is "twenty-one billion, three hundred thirteen million, two thousand, one hundred four".