70518311 has 2 divisors, whose sum is σ = 70518312. Its totient is φ = 70518310.

The previous prime is 70518307. The next prime is 70518341. The reversal of 70518311 is 11381507.

It is a weak prime.

It is an emirp because it is prime and its reverse (11381507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70518311 - 2² = 70518307 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70518341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35259155 + 35259156.

It is an arithmetic number, because the mean of its divisors is an integer number (35259156).

Almost surely, 2^70518311 is an apocalyptic number.

70518311 is a deficient number, since it is larger than the sum of its proper divisors (1).

70518311 is an equidigital number, since it uses as much as digits as its factorization.

70518311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 70518311 is about 8397.5181452617. The cubic root of 70518311 is about 413.1432237226.

Adding to 70518311 its reverse (11381507), we get a palindrome (81899818).

The spelling of 70518311 in words is "seventy million, five hundred eighteen thousand, three hundred eleven".