20431332411 has 32 divisors (see below), whose sum is σ = 32975820288. Its totient is φ = 10984619520.

The previous prime is 20431332403. The next prime is 20431332413. The reversal of 20431332411 is 11423313402.

It is a happy number.

It is not a de Polignac number, because 20431332411 - 2³ = 20431332403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20431332413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1325016 + ... + 1340346.

It is an arithmetic number, because the mean of its divisors is an integer number (1030494384).

Almost surely, 2^20431332411 is an apocalyptic number.

20431332411 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20431332411 is a deficient number, since it is larger than the sum of its proper divisors (12544487877).

20431332411 is a wasteful number, since it uses less digits than its factorization.

20431332411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19091.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20431332411 its reverse (11423313402), we get a palindrome (31854645813).

The spelling of 20431332411 in words is "twenty billion, four hundred thirty-one million, three hundred thirty-two thousand, four hundred eleven".