20355104303131 has 16 divisors (see below), whose sum is σ = 21952890925056. Its totient is φ = 18761896240416.

The previous prime is 20355104303099. The next prime is 20355104303221. The reversal of 20355104303131 is 13130340155302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20355104303131 - 2⁵ = 20355104303099 is a prime.

It is a super-2 number, since 2×20355104303131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20355104303093 and 20355104303102.

It is not an unprimeable number, because it can be changed into a prime (20355134303131) 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, 87810126 + ... + 88041628.

It is an arithmetic number, because the mean of its divisors is an integer number (1372055682816).

Almost surely, 2^{20355104303131} is an apocalyptic number.

20355104303131 is a deficient number, since it is larger than the sum of its proper divisors (1597786621925).

20355104303131 is a wasteful number, since it uses less digits than its factorization.

20355104303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241362.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 20355104303131 its reverse (13130340155302), we get a palindrome (33485444458433).

The spelling of 20355104303131 in words is "twenty trillion, three hundred fifty-five billion, one hundred four million, three hundred three thousand, one hundred thirty-one".