131609348 has 24 divisors (see below), whose sum is σ = 248955672. Its totient is φ = 60516864.

The previous prime is 131609341. The next prime is 131609389. The reversal of 131609348 is 843906131.

It can be written as a sum of positive squares in 4 ways, for example, as 13191424 + 118417924 = 3632^2 + 10882^2 .

It is not an unprimeable number, because it can be changed into a prime (131609341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9836 + ... + 18972.

It is an arithmetic number, because the mean of its divisors is an integer number (10373153).

Almost surely, 2^131609348 is an apocalyptic number.

It is an amenable number.

131609348 is a deficient number, since it is larger than the sum of its proper divisors (117346324).

131609348 is a wasteful number, since it uses less digits than its factorization.

131609348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9431 (or 9429 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 131609348 is about 11472.1117498044. Note that the first 3 decimals coincide. The cubic root of 131609348 is about 508.6615525981.

The spelling of 131609348 in words is "one hundred thirty-one million, six hundred nine thousand, three hundred forty-eight".