21313112134 has 16 divisors (see below), whose sum is σ = 32140800000. Its totient is φ = 10599547464.

The previous prime is 21313112099. The next prime is 21313112147. The reversal of 21313112134 is 43121131312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572117 + ... + 1585615.

It is an arithmetic number, because the mean of its divisors is an integer number (2008800000).

Almost surely, 2^21313112134 is an apocalyptic number.

21313112134 is a deficient number, since it is larger than the sum of its proper divisors (10827687866).

21313112134 is a wasteful number, since it uses less digits than its factorization.

21313112134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17667.

The product of its digits is 432, while the sum is 22.

Adding to 21313112134 its reverse (43121131312), we get a palindrome (64434243446).

The spelling of 21313112134 in words is "twenty-one billion, three hundred thirteen million, one hundred twelve thousand, one hundred thirty-four".