131315208 has 32 divisors (see below), whose sum is σ = 347600160. Its totient is φ = 41196800.

The previous prime is 131315207. The next prime is 131315221. The reversal of 131315208 is 802513131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (131315207) 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, 160518 + ... + 161333.

It is an arithmetic number, because the mean of its divisors is an integer number (10862505).

Almost surely, 2^131315208 is an apocalyptic number.

It is an amenable number.

131315208 is an abundant number, since it is smaller than the sum of its proper divisors (216284952).

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

131315208 is a wasteful number, since it uses less digits than its factorization.

131315208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321877 (or 321873 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 131315208 is about 11459.2847944363. The cubic root of 131315208 is about 508.2823259638.

Adding to 131315208 its reverse (802513131), we get a palindrome (933828339).

The spelling of 131315208 in words is "one hundred thirty-one million, three hundred fifteen thousand, two hundred eight".