857007311 has 4 divisors (see below), whose sum is σ = 859245312. Its totient is φ = 854769312.

The previous prime is 857007299. The next prime is 857007317. The reversal of 857007311 is 113700758.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857007311 is a prime.

It is a super-2 number, since 2×857007311² = 1468923062214901442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857007317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118426 + ... + 1119191.

It is an arithmetic number, because the mean of its divisors is an integer number (214811328).

Almost surely, 2^857007311 is an apocalyptic number.

857007311 is a deficient number, since it is larger than the sum of its proper divisors (2238001).

857007311 is a wasteful number, since it uses less digits than its factorization.

857007311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238000.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 857007311 is about 29274.6872058439. The cubic root of 857007311 is about 949.8641767039.

The spelling of 857007311 in words is "eight hundred fifty-seven million, seven thousand, three hundred eleven".