21063023313 has 8 divisors (see below), whose sum is σ = 28086236448. Its totient is φ = 14040912864.

The previous prime is 21063023309. The next prime is 21063023369. The reversal of 21063023313 is 31332036012.

It is a happy number.

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

It is not a de Polignac number, because 21063023313 - 2² = 21063023309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21063027313) 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, 230020 + ... + 308277.

It is an arithmetic number, because the mean of its divisors is an integer number (3510779556).

Almost surely, 2^21063023313 is an apocalyptic number.

It is an amenable number.

21063023313 is a deficient number, since it is larger than the sum of its proper divisors (7023213135).

21063023313 is a wasteful number, since it uses less digits than its factorization.

21063023313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551343.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21063023313 its reverse (31332036012), we get a palindrome (52395059325).

The spelling of 21063023313 in words is "twenty-one billion, sixty-three million, twenty-three thousand, three hundred thirteen".