172070131 has 2 divisors, whose sum is σ = 172070132. Its totient is φ = 172070130.

The previous prime is 172070113. The next prime is 172070147. The reversal of 172070131 is 131070271.

Together with previous prime (172070113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172070131 - 2¹⁷ = 171939059 is a prime.

It is a super-2 number, since 2×172070131² = 59216259964714322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172070161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86035065 + 86035066.

It is an arithmetic number, because the mean of its divisors is an integer number (86035066).

Almost surely, 2^172070131 is an apocalyptic number.

172070131 is a deficient number, since it is larger than the sum of its proper divisors (1).

172070131 is an equidigital number, since it uses as much as digits as its factorization.

172070131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 172070131 is about 13117.5504954241. The cubic root of 172070131 is about 556.2053515314.

The spelling of 172070131 in words is "one hundred seventy-two million, seventy thousand, one hundred thirty-one".