131211434310020 has 48 divisors (see below), whose sum is σ = 275604400501248. Its totient is φ = 52473072412800.

The previous prime is 131211434309929. The next prime is 131211434310029. The reversal of 131211434310020 is 20013434112131.

It is not an unprimeable number, because it can be changed into a prime (131211434310029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2445529514 + ... + 2445583166.

It is an arithmetic number, because the mean of its divisors is an integer number (5741758343776).

Almost surely, 2^{131211434310020} is an apocalyptic number.

131211434310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131211434310020 is an abundant number, since it is smaller than the sum of its proper divisors (144392966191228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131211434310020 is a wasteful number, since it uses less digits than its factorization.

131211434310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78180 (or 78178 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 131211434310020 its reverse (20013434112131), we get a palindrome (151224868422151).

The spelling of 131211434310020 in words is "one hundred thirty-one trillion, two hundred eleven billion, four hundred thirty-four million, three hundred ten thousand, twenty".