21310311404 has 24 divisors (see below), whose sum is σ = 37720785648. Its totient is φ = 10533196800.

The previous prime is 21310311397. The next prime is 21310311419. The reversal of 21310311404 is 40411301312.

It is an unprimeable number.

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, 311504 + ... + 373704.

It is an arithmetic number, because the mean of its divisors is an integer number (1571699402).

Almost surely, 2^21310311404 is an apocalyptic number.

It is an amenable number.

21310311404 is a deficient number, since it is larger than the sum of its proper divisors (16410474244).

21310311404 is a wasteful number, since it uses less digits than its factorization.

21310311404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63185 (or 63183 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21310311404 its reverse (40411301312), we get a palindrome (61721612716).

The spelling of 21310311404 in words is "twenty-one billion, three hundred ten million, three hundred eleven thousand, four hundred four".