131431108 has 36 divisors (see below), whose sum is σ = 242479440. Its totient is φ = 62327056.

The previous prime is 131431099. The next prime is 131431109. The reversal of 131431108 is 801134131.

It is not an unprimeable number, because it can be changed into a prime (131431109) 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, 378591 + ... + 378937.

It is an arithmetic number, because the mean of its divisors is an integer number (6735540).

Almost surely, 2^131431108 is an apocalyptic number.

It is an amenable number.

131431108 is a deficient number, since it is larger than the sum of its proper divisors (111048332).

131431108 is a wasteful number, since it uses less digits than its factorization.

131431108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 131431108 is about 11464.3407137087. The cubic root of 131431108 is about 508.4318201960.

Adding to 131431108 its reverse (801134131), we get a palindrome (932565239).

The spelling of 131431108 in words is "one hundred thirty-one million, four hundred thirty-one thousand, one hundred eight".