131128395 has 16 divisors (see below), whose sum is σ = 222147360. Its totient is φ = 65821184.

The previous prime is 131128379. The next prime is 131128397. The reversal of 131128395 is 593821131.

It is a cyclic number.

It is not a de Polignac number, because 131128395 - 2⁴ = 131128379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131128397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256860 + ... + 257369.

It is an arithmetic number, because the mean of its divisors is an integer number (13884210).

Almost surely, 2^131128395 is an apocalyptic number.

131128395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131128395 is a deficient number, since it is larger than the sum of its proper divisors (91018965).

131128395 is a wasteful number, since it uses less digits than its factorization.

131128395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514254.

The product of its digits is 6480, while the sum is 33.

The square root of 131128395 is about 11451.1307301943. The cubic root of 131128395 is about 508.0411789526.

The spelling of 131128395 in words is "one hundred thirty-one million, one hundred twenty-eight thousand, three hundred ninety-five".