131108650 has 12 divisors (see below), whose sum is σ = 243862182. Its totient is φ = 52443440.

The previous prime is 131108647. The next prime is 131108651. The reversal of 131108650 is 56801131.

It can be written as a sum of positive squares in 3 ways, for example, as 110397049 + 20711601 = 10507^2 + 4551^2 .

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

It is not an unprimeable number, because it can be changed into a prime (131108651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1311037 + ... + 1311136.

Almost surely, 2^131108650 is an apocalyptic number.

131108650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131108650 is a deficient number, since it is larger than the sum of its proper divisors (112753532).

131108650 is a wasteful number, since it uses less digits than its factorization.

131108650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622185 (or 2622180 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 131108650 is about 11450.2685558025. The cubic root of 131108650 is about 508.0156777975.

Adding to 131108650 its reverse (56801131), we get a palindrome (187909781).

The spelling of 131108650 in words is "one hundred thirty-one million, one hundred eight thousand, six hundred fifty".