20311103322131 has 8 divisors (see below), whose sum is σ = 20491262688480. Its totient is φ = 20130951238272.

The previous prime is 20311103322121. The next prime is 20311103322143. The reversal of 20311103322131 is 13122330111302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20311103322131 is a prime.

It is a super-2 number, since 2×20311103322131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311103322097 and 20311103322106.

It is not an unprimeable number, because it can be changed into a prime (20311103322121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3860450 + ... + 7451528.

It is an arithmetic number, because the mean of its divisors is an integer number (2561407836060).

Almost surely, 2^{20311103322131} is an apocalyptic number.

20311103322131 is a deficient number, since it is larger than the sum of its proper divisors (180159366349).

20311103322131 is a wasteful number, since it uses less digits than its factorization.

20311103322131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641245.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 20311103322131 its reverse (13122330111302), we get a palindrome (33433433433433).

The spelling of 20311103322131 in words is "twenty trillion, three hundred eleven billion, one hundred three million, three hundred twenty-two thousand, one hundred thirty-one".