20412134431031 has 32 divisors (see below), whose sum is σ = 24480757923840. Its totient is φ = 16640495679456.

The previous prime is 20412134431009. The next prime is 20412134431049. The reversal of 20412134431031 is 13013443121402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20412134431031 is a prime.

It is a super-2 number, since 2×20412134431031² (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 = 20412134430985 and 20412134431003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412134431831) 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, 28407650 + ... + 29117328.

It is an arithmetic number, because the mean of its divisors is an integer number (765023685120).

Almost surely, 2^{20412134431031} is an apocalyptic number.

20412134431031 is a deficient number, since it is larger than the sum of its proper divisors (4068623492809).

20412134431031 is a wasteful number, since it uses less digits than its factorization.

20412134431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710723.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 20412134431031 its reverse (13013443121402), we get a palindrome (33425577552433).

The spelling of 20412134431031 in words is "twenty trillion, four hundred twelve billion, one hundred thirty-four million, four hundred thirty-one thousand, thirty-one".