70111081 has 2 divisors, whose sum is σ = 70111082. Its totient is φ = 70111080.

The previous prime is 70111051. The next prime is 70111099. The reversal of 70111081 is 18011107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45697600 + 24413481 = 6760^2 + 4941^2 .

It is a cyclic number.

It is not a de Polignac number, because 70111081 - 2⁹ = 70110569 is a prime.

It is a super-3 number, since 3×70111081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (70111031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35055540 + 35055541.

It is an arithmetic number, because the mean of its divisors is an integer number (35055541).

Almost surely, 2^70111081 is an apocalyptic number.

It is an amenable number.

70111081 is a deficient number, since it is larger than the sum of its proper divisors (1).

70111081 is an equidigital number, since it uses as much as digits as its factorization.

70111081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

The square root of 70111081 is about 8373.2359933302. The cubic root of 70111081 is about 412.3464131003.

Adding to 70111081 its reverse (18011107), we get a palindrome (88122188).

The spelling of 70111081 in words is "seventy million, one hundred eleven thousand, eighty-one".