131123104 has 48 divisors (see below), whose sum is σ = 310564800. Its totient is φ = 53236224.

The previous prime is 131123093. The next prime is 131123107. The reversal of 131123104 is 401321131.

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

It is not an unprimeable number, because it can be changed into a prime (131123107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11149 + ... + 19660.

It is an arithmetic number, because the mean of its divisors is an integer number (6470100).

Almost surely, 2^131123104 is an apocalyptic number.

131123104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131123104 is an abundant number, since it is smaller than the sum of its proper divisors (179441696).

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

131123104 is a wasteful number, since it uses less digits than its factorization.

131123104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30845 (or 30837 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 131123104 is about 11450.8997026435. The cubic root of 131123104 is about 508.0343457465.

Adding to 131123104 its reverse (401321131), we get a palindrome (532444235).

The spelling of 131123104 in words is "one hundred thirty-one million, one hundred twenty-three thousand, one hundred four".