131123108 has 24 divisors (see below), whose sum is σ = 244081152. Its totient is φ = 61421184.

The previous prime is 131123107. The next prime is 131123131. The reversal of 131123108 is 801321131.

It is a self number, because there is not a number n which added to its sum of digits gives 131123108.

It is not an unprimeable number, because it can be changed into a prime (131123107) 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, 10841 + ... + 19487.

It is an arithmetic number, because the mean of its divisors is an integer number (10170048).

Almost surely, 2^131123108 is an apocalyptic number.

It is an amenable number.

131123108 is a deficient number, since it is larger than the sum of its proper divisors (112958044).

131123108 is a wasteful number, since it uses less digits than its factorization.

131123108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8891 (or 8889 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 131123108 is about 11450.8998773022. The cubic root of 131123108 is about 508.0343509125.

Adding to 131123108 its reverse (801321131), we get a palindrome (932444239).

The spelling of 131123108 in words is "one hundred thirty-one million, one hundred twenty-three thousand, one hundred eight".