131240550 has 48 divisors (see below), whose sum is σ = 371976192. Its totient is φ = 29997600.

The previous prime is 131240537. The next prime is 131240563. The reversal of 131240550 is 55042131.

It is an interprime number because it is at equal distance from previous prime (131240537) and next prime (131240563).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61446 + ... + 63545.

It is an arithmetic number, because the mean of its divisors is an integer number (7749504).

Almost surely, 2^131240550 is an apocalyptic number.

131240550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131240550 is an abundant number, since it is smaller than the sum of its proper divisors (240735642).

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

131240550 is a wasteful number, since it uses less digits than its factorization.

131240550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125013 (or 125008 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 131240550 is about 11456.0267981530. The cubic root of 131240550 is about 508.1859813584.

Adding to 131240550 its reverse (55042131), we get a palindrome (186282681).

The spelling of 131240550 in words is "one hundred thirty-one million, two hundred forty thousand, five hundred fifty".