170120131 has 2 divisors, whose sum is σ = 170120132. Its totient is φ = 170120130.

The previous prime is 170120123. The next prime is 170120141. The reversal of 170120131 is 131021071.

170120131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (131021071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170120131 - 2³ = 170120123 is a prime.

It is a super-2 number, since 2×170120131² = 57881717942914322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (170120141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85060065 + 85060066.

It is an arithmetic number, because the mean of its divisors is an integer number (85060066).

Almost surely, 2^170120131 is an apocalyptic number.

170120131 is a deficient number, since it is larger than the sum of its proper divisors (1).

170120131 is an equidigital number, since it uses as much as digits as its factorization.

170120131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 170120131 is about 13043.0108103919. The cubic root of 170120131 is about 554.0962821445.

The spelling of 170120131 in words is "one hundred seventy million, one hundred twenty thousand, one hundred thirty-one".