20430040040031 has 8 divisors (see below), whose sum is σ = 27243726067504. Its totient is φ = 13618190352960.

The previous prime is 20430040040023. The next prime is 20430040040063. The reversal of 20430040040031 is 13004004003402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20430040040031 - 2³ = 20430040040023 is a prime.

It is a super-2 number, since 2×20430040040031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430040040231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459059140 + ... + 459103641.

It is an arithmetic number, because the mean of its divisors is an integer number (3405465758438).

Almost surely, 2^{20430040040031} is an apocalyptic number.

20430040040031 is a deficient number, since it is larger than the sum of its proper divisors (6813686027473).

20430040040031 is an equidigital number, since it uses as much as digits as its factorization.

20430040040031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918170201.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20430040040031 its reverse (13004004003402), we get a palindrome (33434044043433).

The spelling of 20430040040031 in words is "twenty trillion, four hundred thirty billion, forty million, forty thousand, thirty-one".