21042340000331 has 16 divisors (see below), whose sum is σ = 23397748593408. Its totient is φ = 18792492825600.

The previous prime is 21042340000277. The next prime is 21042340000349. The reversal of 21042340000331 is 13300004324012.

It is not a de Polignac number, because 21042340000331 - 2¹⁴ = 21042339983947 is a prime.

It is a super-2 number, since 2×21042340000331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21042340000297 and 21042340000306.

It is not an unprimeable number, because it can be changed into a prime (21042340000631) 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, 4800110 + ... + 8070051.

It is an arithmetic number, because the mean of its divisors is an integer number (1462359287088).

Almost surely, 2^{21042340000331} is an apocalyptic number.

21042340000331 is a deficient number, since it is larger than the sum of its proper divisors (2355408593077).

21042340000331 is a wasteful number, since it uses less digits than its factorization.

21042340000331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12874262.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21042340000331 its reverse (13300004324012), we get a palindrome (34342344324343).

The spelling of 21042340000331 in words is "twenty-one trillion, forty-two billion, three hundred forty million, three hundred thirty-one", and thus it is an aban number.