21303261039 has 32 divisors (see below), whose sum is σ = 30001766400. Its totient is φ = 13427635680.

The previous prime is 21303261029. The next prime is 21303261047. The reversal of 21303261039 is 93016230312.

It is not a de Polignac number, because 21303261039 - 2³¹ = 19155777391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21303260997 and 21303261015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303261019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 882472 + ... + 906290.

It is an arithmetic number, because the mean of its divisors is an integer number (937555200).

Almost surely, 2^21303261039 is an apocalyptic number.

21303261039 is a deficient number, since it is larger than the sum of its proper divisors (8698505361).

21303261039 is a wasteful number, since it uses less digits than its factorization.

21303261039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24075.

The product of its (nonzero) digits is 5832, while the sum is 30.

The spelling of 21303261039 in words is "twenty-one billion, three hundred three million, two hundred sixty-one thousand, thirty-nine".