20340344130331 has 2 divisors, whose sum is σ = 20340344130332. Its totient is φ = 20340344130330.

The previous prime is 20340344130307. The next prime is 20340344130433. The reversal of 20340344130331 is 13303144304302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20340344130331 - 2²⁹ = 20339807259419 is a prime.

It is a super-2 number, since 2×20340344130331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20340344130293 and 20340344130302.

It is not a weakly prime, because it can be changed into another prime (20340344133331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170172065165 + 10170172065166.

It is an arithmetic number, because the mean of its divisors is an integer number (10170172065166).

Almost surely, 2^{20340344130331} is an apocalyptic number.

20340344130331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20340344130331 is an equidigital number, since it uses as much as digits as its factorization.

20340344130331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 20340344130331 its reverse (13303144304302), we get a palindrome (33643488434633).

The spelling of 20340344130331 in words is "twenty trillion, three hundred forty billion, three hundred forty-four million, one hundred thirty thousand, three hundred thirty-one".