131426550 has 144 divisors (see below), whose sum is σ = 379819440. Its totient is φ = 33747840.

The previous prime is 131426549. The next prime is 131426551. The reversal of 131426550 is 55624131.

131426550 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 2 + 655 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (131426549) and next prime (131426551).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131426551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 352164 + ... + 352536.

It is an arithmetic number, because the mean of its divisors is an integer number (2637635).

Almost surely, 2^131426550 is an apocalyptic number.

131426550 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 131426550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189909720).

131426550 is an abundant number, since it is smaller than the sum of its proper divisors (248392890).

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

131426550 is a wasteful number, since it uses less digits than its factorization.

131426550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 131426550 is about 11464.1419216616. The cubic root of 131426550 is about 508.4259426960.

The spelling of 131426550 in words is "one hundred thirty-one million, four hundred twenty-six thousand, five hundred fifty".