170131139 has 4 divisors (see below), whose sum is σ = 175997760. Its totient is φ = 164264520.

The previous prime is 170131133. The next prime is 170131147. The reversal of 170131139 is 931131071.

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-170131139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170131133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2933267 + ... + 2933324.

It is an arithmetic number, because the mean of its divisors is an integer number (43999440).

Almost surely, 2^170131139 is an apocalyptic number.

170131139 is a deficient number, since it is larger than the sum of its proper divisors (5866621).

170131139 is an equidigital number, since it uses as much as digits as its factorization.

170131139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866620.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 170131139 is about 13043.4327920222. The cubic root of 170131139 is about 554.1082332292.

The spelling of 170131139 in words is "one hundred seventy million, one hundred thirty-one thousand, one hundred thirty-nine".