131241040 has 80 divisors (see below), whose sum is σ = 351584640. Its totient is φ = 44628480.

The previous prime is 131241029. The next prime is 131241049. The reversal of 131241040 is 40142131.

131241040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131241049) 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, 72466 + ... + 74254.

It is an arithmetic number, because the mean of its divisors is an integer number (4394808).

Almost surely, 2^131241040 is an apocalyptic number.

131241040 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 131241040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175792320).

131241040 is an abundant number, since it is smaller than the sum of its proper divisors (220343600).

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

131241040 is a wasteful number, since it uses less digits than its factorization.

131241040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 131241040 is about 11456.0481842562. The cubic root of 131241040 is about 508.1866138124.

Adding to 131241040 its reverse (40142131), we get a palindrome (171383171).

The spelling of 131241040 in words is "one hundred thirty-one million, two hundred forty-one thousand, forty".