21310343112 has 16 divisors (see below), whose sum is σ = 53275857840. Its totient is φ = 7103447696.

The previous prime is 21310343099. The next prime is 21310343137. The reversal of 21310343112 is 21134301312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443965458 + ... + 443965505.

It is an arithmetic number, because the mean of its divisors is an integer number (3329741115).

Almost surely, 2^21310343112 is an apocalyptic number.

It is an amenable number.

21310343112 is an abundant number, since it is smaller than the sum of its proper divisors (31965514728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21310343112 is a wasteful number, since it uses less digits than its factorization.

21310343112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887930972 (or 887930968 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21310343112 its reverse (21134301312), we get a palindrome (42444644424).

The spelling of 21310343112 in words is "twenty-one billion, three hundred ten million, three hundred forty-three thousand, one hundred twelve".