131811760 has 40 divisors (see below), whose sum is σ = 314752176. Its totient is φ = 51298560.

The previous prime is 131811751. The next prime is 131811763. The reversal of 131811760 is 67118131.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (131811763) 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, 19306 + ... + 25225.

Almost surely, 2^131811760 is an apocalyptic number.

131811760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131811760 is an abundant number, since it is smaller than the sum of its proper divisors (182940416).

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

131811760 is a wasteful number, since it uses less digits than its factorization.

131811760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44581 (or 44575 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 131811760 is about 11480.9302758966. The cubic root of 131811760 is about 508.9221887558.

Adding to 131811760 its reverse (67118131), we get a palindrome (198929891).

It can be divided in two parts, 13181 and 1760, that added together give a palindrome (14941).

The spelling of 131811760 in words is "one hundred thirty-one million, eight hundred eleven thousand, seven hundred sixty".