131268550 has 72 divisors (see below), whose sum is σ = 286890120. Its totient is φ = 44553600.

The previous prime is 131268547. The next prime is 131268583. The reversal of 131268550 is 55862131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 320746 + ... + 321154.

It is an arithmetic number, because the mean of its divisors is an integer number (3984585).

Almost surely, 2^131268550 is an apocalyptic number.

131268550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131268550 is an abundant number, since it is smaller than the sum of its proper divisors (155621570).

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

131268550 is a wasteful number, since it uses less digits than its factorization.

131268550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 131268550 is about 11457.2487971589. The cubic root of 131268550 is about 508.2221190604. Note that the first 3 decimals are identical.

The spelling of 131268550 in words is "one hundred thirty-one million, two hundred sixty-eight thousand, five hundred fifty".