2215323140 has 12 divisors (see below), whose sum is σ = 4652178636. Its totient is φ = 886129248.

The previous prime is 2215323113. The next prime is 2215323157. The reversal of 2215323140 is 413235122.

It can be written as a sum of positive squares in 2 ways, for example, as 1315803076 + 899520064 = 36274^2 + 29992^2 .

It is a super-2 number, since 2×2215323140² = 9815313229238919200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55383059 + ... + 55383098.

It is an arithmetic number, because the mean of its divisors is an integer number (387681553).

Almost surely, 2^2215323140 is an apocalyptic number.

2215323140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215323140 is an abundant number, since it is smaller than the sum of its proper divisors (2436855496).

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

2215323140 is a wasteful number, since it uses less digits than its factorization.

2215323140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110766166 (or 110766164 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2215323140 is about 47067.2193782467. The cubic root of 2215323140 is about 1303.6040307574.

Adding to 2215323140 its reverse (413235122), we get a palindrome (2628558262).

The spelling of 2215323140 in words is "two billion, two hundred fifteen million, three hundred twenty-three thousand, one hundred forty".