21131314039 has 8 divisors (see below), whose sum is σ = 23242859280. Its totient is φ = 19210284280.

The previous prime is 21131314033. The next prime is 21131314091. The reversal of 21131314039 is 93041313112.

It is not a de Polignac number, because 21131314039 - 2⁹ = 21131313527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21131313998 and 21131314016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131314033) by changing a digit.

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, 7936804 + ... + 7939465.

It is an arithmetic number, because the mean of its divisors is an integer number (2905357410).

Almost surely, 2^21131314039 is an apocalyptic number.

21131314039 is a deficient number, since it is larger than the sum of its proper divisors (2111545241).

21131314039 is an equidigital number, since it uses as much as digits as its factorization.

21131314039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15876302 (or 15876280 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 21131314039 in words is "twenty-one billion, one hundred thirty-one million, three hundred fourteen thousand, thirty-nine".