21323010313 has 8 divisors (see below), whose sum is σ = 23444628480. Its totient is φ = 19231919280.

The previous prime is 21323010287. The next prime is 21323010329. The reversal of 21323010313 is 31301032312.

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 21323010313 - 2⁹ = 21323009801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21323010383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7630318 + ... + 7633111.

It is an arithmetic number, because the mean of its divisors is an integer number (2930578560).

Almost surely, 2^21323010313 is an apocalyptic number.

It is an amenable number.

21323010313 is a deficient number, since it is larger than the sum of its proper divisors (2121618167).

21323010313 is a wasteful number, since it uses less digits than its factorization.

21323010313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15263567.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21323010313 its reverse (31301032312), we get a palindrome (52624042625).

The spelling of 21323010313 in words is "twenty-one billion, three hundred twenty-three million, ten thousand, three hundred thirteen".