70321271 has 2 divisors, whose sum is σ = 70321272. Its totient is φ = 70321270.

The previous prime is 70321267. The next prime is 70321283. The reversal of 70321271 is 17212307.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70321271 - 2² = 70321267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70321171) 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, 35160635 + 35160636.

It is an arithmetic number, because the mean of its divisors is an integer number (35160636).

Almost surely, 2^70321271 is an apocalyptic number.

70321271 is a deficient number, since it is larger than the sum of its proper divisors (1).

70321271 is an equidigital number, since it uses as much as digits as its factorization.

70321271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 70321271 is about 8385.7779007078. Note that the first 3 decimals coincide. The cubic root of 70321271 is about 412.7580675932.

Adding to 70321271 its reverse (17212307), we get a palindrome (87533578).

The spelling of 70321271 in words is "seventy million, three hundred twenty-one thousand, two hundred seventy-one".