21311102314 has 4 divisors (see below), whose sum is σ = 31966653474. Its totient is φ = 10655551156.

The previous prime is 21311102311. The next prime is 21311102339. The reversal of 21311102314 is 41320111312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12103740289 + 9207362025 = 110017^2 + 95955^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21311102291 and 21311102300.

It is not an unprimeable number, because it can be changed into a prime (21311102311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5327775577 + ... + 5327775580.

Almost surely, 2^21311102314 is an apocalyptic number.

21311102314 is a deficient number, since it is larger than the sum of its proper divisors (10655551160).

21311102314 is a wasteful number, since it uses less digits than its factorization.

21311102314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10655551159.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21311102314 its reverse (41320111312), we get a palindrome (62631213626).

The spelling of 21311102314 in words is "twenty-one billion, three hundred eleven million, one hundred two thousand, three hundred fourteen".