131030240 has 48 divisors (see below), whose sum is σ = 337705200. Its totient is φ = 47646720.

The previous prime is 131030231. The next prime is 131030243. The reversal of 131030240 is 42030131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131030243) 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, 35465 + ... + 38984.

It is an arithmetic number, because the mean of its divisors is an integer number (7035525).

Almost surely, 2^131030240 is an apocalyptic number.

131030240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131030240 is an abundant number, since it is smaller than the sum of its proper divisors (206674960).

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

131030240 is a wasteful number, since it uses less digits than its factorization.

131030240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74475 (or 74467 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 131030240 is about 11446.8441065649. The cubic root of 131030240 is about 507.9143840670.

Adding to 131030240 its reverse (42030131), we get a palindrome (173060371).

The spelling of 131030240 in words is "one hundred thirty-one million, thirty thousand, two hundred forty".