131440650 has 96 divisors (see below), whose sum is σ = 365387328. Its totient is φ = 30988800.

The previous prime is 131440643. The next prime is 131440703. The reversal of 131440650 is 56044131.

It is a self number, because there is not a number n which added to its sum of digits gives 131440650.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59974 + ... + 62126.

It is an arithmetic number, because the mean of its divisors is an integer number (3806118).

Almost surely, 2^131440650 is an apocalyptic number.

131440650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131440650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182693664).

131440650 is an abundant number, since it is smaller than the sum of its proper divisors (233946678).

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

131440650 is a wasteful number, since it uses less digits than its factorization.

131440650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216 (or 2211 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 131440650 is about 11464.7568661529. The cubic root of 131440650 is about 508.4441240793. Note that the first 3 decimals are identical.

Adding to 131440650 its reverse (56044131), we get a palindrome (187484781).

The spelling of 131440650 in words is "one hundred thirty-one million, four hundred forty thousand, six hundred fifty".