70430161 has 2 divisors, whose sum is σ = 70430162. Its totient is φ = 70430160.

The previous prime is 70430153. The next prime is 70430179. The reversal of 70430161 is 16103407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68310225 + 2119936 = 8265^2 + 1456^2 .

It is a cyclic number.

It is not a de Polignac number, because 70430161 - 2³ = 70430153 is a prime.

It is not a weakly prime, because it can be changed into another prime (70130161) 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, 35215080 + 35215081.

It is an arithmetic number, because the mean of its divisors is an integer number (35215081).

Almost surely, 2^70430161 is an apocalyptic number.

It is an amenable number.

70430161 is a deficient number, since it is larger than the sum of its proper divisors (1).

70430161 is an equidigital number, since it uses as much as digits as its factorization.

70430161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 70430161 is about 8392.2679294694. The cubic root of 70430161 is about 412.9710048101.

Adding to 70430161 its reverse (16103407), we get a palindrome (86533568).

The spelling of 70430161 in words is "seventy million, four hundred thirty thousand, one hundred sixty-one".