131052240 has 120 divisors (see below), whose sum is σ = 480156768. Its totient is φ = 31768320.

The previous prime is 131052239. The next prime is 131052281. The reversal of 131052240 is 42250131.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354 + ... + 16193.

Almost surely, 2^131052240 is an apocalyptic number.

131052240 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 131052240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240078384).

131052240 is an abundant number, since it is smaller than the sum of its proper divisors (349104528).

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

131052240 is a wasteful number, since it uses less digits than its factorization.

131052240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16577 (or 16568 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 131052240 is about 11447.8050297863. The cubic root of 131052240 is about 507.9428087806.

The spelling of 131052240 in words is "one hundred thirty-one million, fifty-two thousand, two hundred forty".