131144740 has 24 divisors (see below), whose sum is σ = 278893440. Its totient is φ = 51793248.

The previous prime is 131144683. The next prime is 131144743. The reversal of 131144740 is 47441131.

It is a happy number.

131144740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131144743) 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, 39922 + ... + 43081.

It is an arithmetic number, because the mean of its divisors is an integer number (11620560).

Almost surely, 2^131144740 is an apocalyptic number.

131144740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131144740 is an abundant number, since it is smaller than the sum of its proper divisors (147748700).

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

131144740 is a wasteful number, since it uses less digits than its factorization.

131144740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83091 (or 83089 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 131144740 is about 11451.8443929351. The cubic root of 131144740 is about 508.0622869871.

Adding to 131144740 its reverse (47441131), we get a palindrome (178585871).

The spelling of 131144740 in words is "one hundred thirty-one million, one hundred forty-four thousand, seven hundred forty".