70513211 has 2 divisors, whose sum is σ = 70513212. Its totient is φ = 70513210.

The previous prime is 70513159. The next prime is 70513213. The reversal of 70513211 is 11231507.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70513211 is a prime.

It is a super-2 number, since 2×70513211² = 9944225851061042, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 70513213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70513213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35256605 + 35256606.

It is an arithmetic number, because the mean of its divisors is an integer number (35256606).

Almost surely, 2^70513211 is an apocalyptic number.

70513211 is a deficient number, since it is larger than the sum of its proper divisors (1).

70513211 is an equidigital number, since it uses as much as digits as its factorization.

70513211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 70513211 is about 8397.2144786233. The cubic root of 70513211 is about 413.1332637504.

Adding to 70513211 its reverse (11231507), we get a palindrome (81744718).

The spelling of 70513211 in words is "seventy million, five hundred thirteen thousand, two hundred eleven".