131331748 has 24 divisors (see below), whose sum is σ = 247564800. Its totient is φ = 60783360.

The previous prime is 131331737. The next prime is 131331751. The reversal of 131331748 is 847133131.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20173 + ... + 25876.

It is an arithmetic number, because the mean of its divisors is an integer number (10315200).

Almost surely, 2^131331748 is an apocalyptic number.

It is an amenable number.

131331748 is a deficient number, since it is larger than the sum of its proper divisors (116233052).

131331748 is a wasteful number, since it uses less digits than its factorization.

131331748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46107 (or 46105 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 131331748 is about 11460.0064572408. The cubic root of 131331748 is about 508.3036655503.

Adding to 131331748 its reverse (847133131), we get a palindrome (978464879).

The spelling of 131331748 in words is "one hundred thirty-one million, three hundred thirty-one thousand, seven hundred forty-eight".