131650000 has 60 divisors (see below), whose sum is σ = 318940524. Its totient is φ = 52640000.

The previous prime is 131649983. The next prime is 131650003. The reversal of 131650000 is 56131.

It can be written as a sum of positive squares in 6 ways, for example, as 123832384 + 7817616 = 11128^2 + 2796^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131650003) 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, 48684 + ... + 51316.

Almost surely, 2^131650000 is an apocalyptic number.

131650000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159470262).

131650000 is an abundant number, since it is smaller than the sum of its proper divisors (187290524).

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

131650000 is an frugal number, since it uses more digits than its factorization.

131650000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666 (or 2640 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 131650000 is about 11473.8833879380. The cubic root of 131650000 is about 508.7139196503.

The spelling of 131650000 in words is "one hundred thirty-one million, six hundred fifty thousand".