20131102303131 has 16 divisors (see below), whose sum is σ = 27350668500480. Its totient is φ = 13166186523360.

The previous prime is 20131102303111. The next prime is 20131102303133. The reversal of 20131102303131 is 13130320113102.

It is a happy number.

It is not a de Polignac number, because 20131102303131 - 2⁵ = 20131102303099 is a prime.

It is a super-2 number, since 2×20131102303131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20131102303098 and 20131102303107.

It is not an unprimeable number, because it can be changed into a prime (20131102303133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4795491 + ... + 7953548.

It is an arithmetic number, because the mean of its divisors is an integer number (1709416781280).

Almost surely, 2^{20131102303131} is an apocalyptic number.

20131102303131 is a deficient number, since it is larger than the sum of its proper divisors (7219566197349).

20131102303131 is a wasteful number, since it uses less digits than its factorization.

20131102303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12759026.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 20131102303131 its reverse (13130320113102), we get a palindrome (33261422416233).

The spelling of 20131102303131 in words is "twenty trillion, one hundred thirty-one billion, one hundred two million, three hundred three thousand, one hundred thirty-one".