70103081 has 2 divisors, whose sum is σ = 70103082. Its totient is φ = 70103080.

The previous prime is 70103069. The next prime is 70103107. The reversal of 70103081 is 18030107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62173225 + 7929856 = 7885^2 + 2816^2 .

It is a cyclic number.

It is not a de Polignac number, because 70103081 - 2¹⁴ = 70086697 is a prime.

It is a super-2 number, since 2×70103081² = 9828883931385122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (70103021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35051540 + 35051541.

It is an arithmetic number, because the mean of its divisors is an integer number (35051541).

Almost surely, 2^70103081 is an apocalyptic number.

It is an amenable number.

70103081 is a deficient number, since it is larger than the sum of its proper divisors (1).

70103081 is an equidigital number, since it uses as much as digits as its factorization.

70103081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 70103081 is about 8372.7582671423. The cubic root of 70103081 is about 412.3307289568.

Adding to 70103081 its reverse (18030107), we get a palindrome (88133188).

The spelling of 70103081 in words is "seventy million, one hundred three thousand, eighty-one".