131361550 has 24 divisors (see below), whose sum is σ = 258706656. Its totient is φ = 49453440.

The previous prime is 131361547. The next prime is 131361557. The reversal of 131361550 is 55163131.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131361557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76422 + ... + 78121.

It is an arithmetic number, because the mean of its divisors is an integer number (10779444).

Almost surely, 2^131361550 is an apocalyptic number.

131361550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131361550 is a deficient number, since it is larger than the sum of its proper divisors (127345106).

131361550 is a wasteful number, since it uses less digits than its factorization.

131361550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154572 (or 154567 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 131361550 is about 11461.3066445323. The cubic root of 131361550 is about 508.3421109894.

The spelling of 131361550 in words is "one hundred thirty-one million, three hundred sixty-one thousand, five hundred fifty".