2215323131 has 8 divisors (see below), whose sum is σ = 2641876224. Its totient is φ = 1816289640.

The previous prime is 2215323113. The next prime is 2215323157. The reversal of 2215323131 is 1313235122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2215323131 - 2¹⁰ = 2215322107 is a prime.

It is a super-2 number, since 2×2215323131² = 9815313149487286322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2215323097 and 2215323106.

It is not an unprimeable number, because it can be changed into a prime (2215323101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6879725 + ... + 6880046.

It is an arithmetic number, because the mean of its divisors is an integer number (330234528).

Almost surely, 2^2215323131 is an apocalyptic number.

2215323131 is a deficient number, since it is larger than the sum of its proper divisors (426553093).

2215323131 is a wasteful number, since it uses less digits than its factorization.

2215323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13759801.

The product of its digits is 1080, while the sum is 23.

The square root of 2215323131 is about 47067.2192826387. The cubic root of 2215323131 is about 1303.6040289921.

Adding to 2215323131 its reverse (1313235122), we get a palindrome (3528558253).

The spelling of 2215323131 in words is "two billion, two hundred fifteen million, three hundred twenty-three thousand, one hundred thirty-one".