131024240 has 40 divisors (see below), whose sum is σ = 307608288. Its totient is φ = 51897600.

The previous prime is 131024227. The next prime is 131024263. The reversal of 131024240 is 42420131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290 + ... + 16190.

Almost surely, 2^131024240 is an apocalyptic number.

131024240 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 131024240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153804144).

131024240 is an abundant number, since it is smaller than the sum of its proper divisors (176584048).

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

131024240 is a wasteful number, since it uses less digits than its factorization.

131024240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16017 (or 16011 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 131024240 is about 11446.5820225952. The cubic root of 131024240 is about 507.9066313202.

Adding to 131024240 its reverse (42420131), we get a palindrome (173444371).

The spelling of 131024240 in words is "one hundred thirty-one million, twenty-four thousand, two hundred forty".