851116331 has 16 divisors (see below), whose sum is σ = 949989600. Its totient is φ = 757118208.

The previous prime is 851116327. The next prime is 851116349. The reversal of 851116331 is 133611158.

It is a cyclic number.

It is not a de Polignac number, because 851116331 - 2² = 851116327 is a prime.

It is a super-2 number, since 2×851116331² = 1448798017789803122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 851116294 and 851116303.

It is not an unprimeable number, because it can be changed into a prime (851116391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230780 + ... + 234438.

It is an arithmetic number, because the mean of its divisors is an integer number (59374350).

Almost surely, 2^851116331 is an apocalyptic number.

851116331 is a deficient number, since it is larger than the sum of its proper divisors (98873269).

851116331 is a wasteful number, since it uses less digits than its factorization.

851116331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318.

The product of its digits is 2160, while the sum is 29.

The square root of 851116331 is about 29173.8981111541. The cubic root of 851116331 is about 947.6827478927.

Adding to 851116331 its reverse (133611158), we get a palindrome (984727489).

It can be divided in two parts, 8511 and 16331, that added together give a palindrome (24842).

The spelling of 851116331 in words is "eight hundred fifty-one million, one hundred sixteen thousand, three hundred thirty-one".