131840280 has 288 divisors, whose sum is σ = 508725360. Its totient is φ = 29352960.

The previous prime is 131840257. The next prime is 131840281. The reversal of 131840280 is 82048131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131840281) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 669142 + ... + 669338.

Almost surely, 2^131840280 is an apocalyptic number.

131840280 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 131840280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254362680).

131840280 is an abundant number, since it is smaller than the sum of its proper divisors (376885080).

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

131840280 is a wasteful number, since it uses less digits than its factorization.

131840280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 131840280 is about 11482.1722683471. The cubic root of 131840280 is about 508.9588911313.

The spelling of 131840280 in words is "one hundred thirty-one million, eight hundred forty thousand, two hundred eighty".