70131161 has 2 divisors, whose sum is σ = 70131162. Its totient is φ = 70131160.

The previous prime is 70131143. The next prime is 70131179. The reversal of 70131161 is 16113107.

It is a balanced prime because it is at equal distance from previous prime (70131143) and next prime (70131179).

It can be written as a sum of positive squares in only one way, i.e., 44689225 + 25441936 = 6685^2 + 5044^2 .

It is a cyclic number.

It is not a de Polignac number, because 70131161 - 2¹⁸ = 69869017 is a prime.

It is a Chen prime.

It is equal to p_4125305 and since 70131161 and 4125305 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70131121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35065580 + 35065581.

It is an arithmetic number, because the mean of its divisors is an integer number (35065581).

Almost surely, 2^70131161 is an apocalyptic number.

It is an amenable number.

70131161 is a deficient number, since it is larger than the sum of its proper divisors (1).

70131161 is an equidigital number, since it uses as much as digits as its factorization.

70131161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 70131161 is about 8374.4349660141. The cubic root of 70131161 is about 412.3857750458.

Adding to 70131161 its reverse (16113107), we get a palindrome (86244268).

The spelling of 70131161 in words is "seventy million, one hundred thirty-one thousand, one hundred sixty-one".