131125408 has 24 divisors (see below), whose sum is σ = 258485472. Its totient is φ = 65478336.

The previous prime is 131125399. The next prime is 131125409. The reversal of 131125408 is 804521131.

It is not an unprimeable number, because it can be changed into a prime (131125409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28141 + ... + 32467.

It is an arithmetic number, because the mean of its divisors is an integer number (10770228).

Almost surely, 2^131125408 is an apocalyptic number.

It is an amenable number.

131125408 is a deficient number, since it is larger than the sum of its proper divisors (127360064).

131125408 is an equidigital number, since it uses as much as digits as its factorization.

131125408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284 (or 5276 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 131125408 is about 11451.0003056502. Note that the first 3 decimals coincide. The cubic root of 131125408 is about 508.0373213327.

Adding to 131125408 its reverse (804521131), we get a palindrome (935646539).

The spelling of 131125408 in words is "one hundred thirty-one million, one hundred twenty-five thousand, four hundred eight".