131071387 has 8 divisors (see below), whose sum is σ = 135782640. Its totient is φ = 126372960.

The previous prime is 131071373. The next prime is 131071399. The reversal of 131071387 is 783170131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131071387 - 2¹⁵ = 131038619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131071307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20733 + ... + 26305.

It is an arithmetic number, because the mean of its divisors is an integer number (16972830).

Almost surely, 2^131071387 is an apocalyptic number.

131071387 is a deficient number, since it is larger than the sum of its proper divisors (4711253).

131071387 is an equidigital number, since it uses as much as digits as its factorization.

131071387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6413.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 131071387 is about 11448.6412730944. The cubic root of 131071387 is about 507.9675447366.

The spelling of 131071387 in words is "one hundred thirty-one million, seventy-one thousand, three hundred eighty-seven".