20011303831 has 2 divisors, whose sum is σ = 20011303832. Its totient is φ = 20011303830.

The previous prime is 20011303783. The next prime is 20011303853. The reversal of 20011303831 is 13830311002.

It is an a-pointer prime, because the next prime (20011303853) can be obtained adding 20011303831 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20011303831 - 2²⁹ = 19474432919 is a prime.

It is a super-2 number, since 2×20011303831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011303331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005651915 + 10005651916.

It is an arithmetic number, because the mean of its divisors is an integer number (10005651916).

Almost surely, 2^20011303831 is an apocalyptic number.

20011303831 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011303831 is an equidigital number, since it uses as much as digits as its factorization.

20011303831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20011303831 its reverse (13830311002), we get a palindrome (33841614833).

The spelling of 20011303831 in words is "twenty billion, eleven million, three hundred three thousand, eight hundred thirty-one".