861120310 has 16 divisors (see below), whose sum is σ = 1550373552. Its totient is φ = 344368800.

The previous prime is 861120289. The next prime is 861120311. The reversal of 861120310 is 13021168.

It is a super-2 number, since 2×861120310² = 1483056376588992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861120311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57505 + ... + 70915.

It is an arithmetic number, because the mean of its divisors is an integer number (96898347).

Almost surely, 2^861120310 is an apocalyptic number.

861120310 is a deficient number, since it is larger than the sum of its proper divisors (689253242).

861120310 is a wasteful number, since it uses less digits than its factorization.

861120310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19839.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 861120310 is about 29344.8515075473. The cubic root of 861120310 is about 951.3812999425.

Adding to 861120310 its reverse (13021168), we get a palindrome (874141478).

The spelling of 861120310 in words is "eight hundred sixty-one million, one hundred twenty thousand, three hundred ten".