131142550 has 96 divisors (see below), whose sum is σ = 317551104. Its totient is φ = 39072000.

The previous prime is 131142533. The next prime is 131142563. The reversal of 131142550 is 55241131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 87810 + ... + 89290.

It is an arithmetic number, because the mean of its divisors is an integer number (3307824).

Almost surely, 2^131142550 is an apocalyptic number.

131142550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131142550 is an abundant number, since it is smaller than the sum of its proper divisors (186408554).

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

131142550 is a wasteful number, since it uses less digits than its factorization.

131142550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 131142550 is about 11451.7487747505. The cubic root of 131142550 is about 508.0594589093.

Adding to 131142550 its reverse (55241131), we get a palindrome (186383681).

The spelling of 131142550 in words is "one hundred thirty-one million, one hundred forty-two thousand, five hundred fifty".