20132131223131 has 4 divisors (see below), whose sum is σ = 21191717077000. Its totient is φ = 19072545369264.

The previous prime is 20132131223119. The next prime is 20132131223147. The reversal of 20132131223131 is 13132213123102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132131223131 is a prime.

It is a super-2 number, since 2×20132131223131² (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 = 20132131223096 and 20132131223105.

It is not an unprimeable number, because it can be changed into a prime (20132131223161) 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 3 ways as a sum of consecutive naturals, for example, 529792926906 + ... + 529792926943.

It is an arithmetic number, because the mean of its divisors is an integer number (5297929269250).

Almost surely, 2^{20132131223131} is an apocalyptic number.

20132131223131 is a deficient number, since it is larger than the sum of its proper divisors (1059585853869).

20132131223131 is a wasteful number, since it uses less digits than its factorization.

20132131223131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059585853868.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 20132131223131 its reverse (13132213123102), we get a palindrome (33264344346233).

The spelling of 20132131223131 in words is "twenty trillion, one hundred thirty-two billion, one hundred thirty-one million, two hundred twenty-three thousand, one hundred thirty-one".