131628395 has 4 divisors (see below), whose sum is σ = 157954080. Its totient is φ = 105302712.

The previous prime is 131628383. The next prime is 131628421. The reversal of 131628395 is 593826131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131628395 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13162835 + ... + 13162844.

It is an arithmetic number, because the mean of its divisors is an integer number (39488520).

Almost surely, 2^131628395 is an apocalyptic number.

131628395 is a deficient number, since it is larger than the sum of its proper divisors (26325685).

131628395 is an equidigital number, since it uses as much as digits as its factorization.

131628395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26325684.

The product of its digits is 38880, while the sum is 38.

The square root of 131628395 is about 11472.9418633583. The cubic root of 131628395 is about 508.6860898857.

The spelling of 131628395 in words is "one hundred thirty-one million, six hundred twenty-eight thousand, three hundred ninety-five".