21531054314 has 32 divisors (see below), whose sum is σ = 40312774656. Its totient is φ = 8378950320.

The previous prime is 21531054301. The next prime is 21531054317. The reversal of 21531054314 is 41345013512.

It is not an unprimeable number, because it can be changed into a prime (21531054317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51899 + ... + 213905.

It is an arithmetic number, because the mean of its divisors is an integer number (1259774208).

Almost surely, 2^21531054314 is an apocalyptic number.

21531054314 is a deficient number, since it is larger than the sum of its proper divisors (18781720342).

21531054314 is a wasteful number, since it uses less digits than its factorization.

21531054314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162890.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 21531054314 its reverse (41345013512), we get a palindrome (62876067826).

The spelling of 21531054314 in words is "twenty-one billion, five hundred thirty-one million, fifty-four thousand, three hundred fourteen".