131313387 has 16 divisors (see below), whose sum is σ = 178375680. Its totient is φ = 85911072.

The previous prime is 131313341. The next prime is 131313431. The reversal of 131313387 is 783313131.

It is not a de Polignac number, because 131313387 - 2⁶ = 131313323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131313317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37414 + ... + 40772.

It is an arithmetic number, because the mean of its divisors is an integer number (11148480).

Almost surely, 2^131313387 is an apocalyptic number.

131313387 is a deficient number, since it is larger than the sum of its proper divisors (47062293).

131313387 is a wasteful number, since it uses less digits than its factorization.

131313387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602.

The product of its digits is 4536, while the sum is 30.

The square root of 131313387 is about 11459.2053389404. The cubic root of 131313387 is about 508.2799764355.

The spelling of 131313387 in words is "one hundred thirty-one million, three hundred thirteen thousand, three hundred eighty-seven".