131134105640 has 128 divisors (see below), whose sum is σ = 327954355200. Its totient is φ = 46965411840.

The previous prime is 131134105639. The next prime is 131134105799. The reversal of 131134105640 is 46501431131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1191002 + ... + 1296438.

It is an arithmetic number, because the mean of its divisors is an integer number (2562143400).

Almost surely, 2^131134105640 is an apocalyptic number.

131134105640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131134105640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163977177600).

131134105640 is an abundant number, since it is smaller than the sum of its proper divisors (196820249560).

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

131134105640 is a wasteful number, since it uses less digits than its factorization.

131134105640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105555 (or 105551 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 131134105640 its reverse (46501431131), we get a palindrome (177635536771).

The spelling of 131134105640 in words is "one hundred thirty-one billion, one hundred thirty-four million, one hundred five thousand, six hundred forty".