21038362131 has 16 divisors (see below), whose sum is σ = 29766885120. Its totient is φ = 13188378720.

The previous prime is 21038362117. The next prime is 21038362139. The reversal of 21038362131 is 13126383012.

It is not a de Polignac number, because 21038362131 - 2¹³ = 21038353939 is a prime.

It is a super-2 number, since 2×21038362131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21038362139) 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, 2579860 + ... + 2588001.

It is an arithmetic number, because the mean of its divisors is an integer number (1860430320).

Almost surely, 2^21038362131 is an apocalyptic number.

21038362131 is a deficient number, since it is larger than the sum of its proper divisors (8728522989).

21038362131 is a wasteful number, since it uses less digits than its factorization.

21038362131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5167946.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 21038362131 in words is "twenty-one billion, thirty-eight million, three hundred sixty-two thousand, one hundred thirty-one".