131152240 has 40 divisors (see below), whose sum is σ = 306163440. Its totient is φ = 52248576.

The previous prime is 131152223. The next prime is 131152249. The reversal of 131152240 is 42251131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131152249) 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, 17371 + ... + 23749.

It is an arithmetic number, because the mean of its divisors is an integer number (7654086).

Almost surely, 2^131152240 is an apocalyptic number.

131152240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131152240 is an abundant number, since it is smaller than the sum of its proper divisors (175011200).

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

131152240 is a wasteful number, since it uses less digits than its factorization.

131152240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6649 (or 6643 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 131152240 is about 11452.1718464228. The cubic root of 131152240 is about 508.0719719467.

The spelling of 131152240 in words is "one hundred thirty-one million, one hundred fifty-two thousand, two hundred forty".