850001311 has 2 divisors, whose sum is σ = 850001312. Its totient is φ = 850001310.

The previous prime is 850001291. The next prime is 850001359. The reversal of 850001311 is 113100058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 850001311 - 2¹⁵ = 849968543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850101311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425000655 + 425000656.

It is an arithmetic number, because the mean of its divisors is an integer number (425000656).

Almost surely, 2^850001311 is an apocalyptic number.

850001311 is a deficient number, since it is larger than the sum of its proper divisors (1).

850001311 is an equidigital number, since it uses as much as digits as its factorization.

850001311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 850001311 is about 29154.7819576823. The cubic root of 850001311 is about 947.2687241930.

Adding to 850001311 its reverse (113100058), we get a palindrome (963101369).

The spelling of 850001311 in words is "eight hundred fifty million, one thousand, three hundred eleven".