20113303131 has 16 divisors (see below), whose sum is σ = 29828339200. Its totient is φ = 13394984904.

The previous prime is 20113303121. The next prime is 20113303139. The reversal of 20113303131 is 13130331102.

It is a happy number.

20113303131 is a `hidden beast` number, since 20 + 1 + 1 + 330 + 313 + 1 = 666.

It is not a de Polignac number, because 20113303131 - 2⁷ = 20113303003 is a prime.

It is a super-2 number, since 2×20113303131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113303139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359071 + ... + 411288.

It is an arithmetic number, because the mean of its divisors is an integer number (1864271200).

Almost surely, 2^20113303131 is an apocalyptic number.

20113303131 is a deficient number, since it is larger than the sum of its proper divisors (9715036069).

20113303131 is an equidigital number, since it uses as much as digits as its factorization.

20113303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771335 (or 771329 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20113303131 its reverse (13130331102), we get a palindrome (33243634233).

The spelling of 20113303131 in words is "twenty billion, one hundred thirteen million, three hundred three thousand, one hundred thirty-one".