851123210 has 32 divisors (see below), whose sum is σ = 1798208640. Its totient is φ = 283925952.

The previous prime is 851123171. The next prime is 851123213. The reversal of 851123210 is 12321158.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (851123213) 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, 161720 + ... + 166899.

It is an arithmetic number, because the mean of its divisors is an integer number (56194020).

Almost surely, 2^851123210 is an apocalyptic number.

851123210 is an abundant number, since it is smaller than the sum of its proper divisors (947085430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

851123210 is a wasteful number, since it uses less digits than its factorization.

851123210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328670.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 851123210 is about 29174.0160073995. The cubic root of 851123210 is about 947.6853010462.

Adding to 851123210 its reverse (12321158), we get a palindrome (863444368).

The spelling of 851123210 in words is "eight hundred fifty-one million, one hundred twenty-three thousand, two hundred ten".