21231051314 has 24 divisors (see below), whose sum is σ = 35272180944. Its totient is φ = 9576795800.

The previous prime is 21231051277. The next prime is 21231051323. The reversal of 21231051314 is 41315013212.

It is a super-2 number, since 2×21231051314² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21231051314.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303152 + ... + 366555.

It is an arithmetic number, because the mean of its divisors is an integer number (1469674206).

Almost surely, 2^21231051314 is an apocalyptic number.

21231051314 is a deficient number, since it is larger than the sum of its proper divisors (14041129630).

21231051314 is a wasteful number, since it uses less digits than its factorization.

21231051314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669862 (or 669851 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 21231051314 its reverse (41315013212), we get a palindrome (62546064526).

The spelling of 21231051314 in words is "twenty-one billion, two hundred thirty-one million, fifty-one thousand, three hundred fourteen".