2215131 has 8 divisors (see below), whose sum is σ = 2967120. Its totient is φ = 1469952.

The previous prime is 2215127. The next prime is 2215133. The reversal of 2215131 is 1315122.

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

It is not a de Polignac number, because 2215131 - 2² = 2215127 is a prime.

It is a super-2 number, since 2×2215131² = 9813610694322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2215131.

It is not an unprimeable number, because it can be changed into a prime (2215133) 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, 886 + ... + 2283.

It is an arithmetic number, because the mean of its divisors is an integer number (370890).

2^2215131 is an apocalyptic number.

2215131 is a deficient number, since it is larger than the sum of its proper divisors (751989).

2215131 is a wasteful number, since it uses less digits than its factorization.

2215131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405.

The product of its digits is 60, while the sum is 15.

The square root of 2215131 is about 1488.3316162737. The cubic root of 2215131 is about 130.3566341490.

Subtracting from 2215131 its reverse (1315122), we obtain a palindrome (900009).

It can be divided in two parts, 2215 and 131, that added together give a triangular number (2346 = T₆₈).

The spelling of 2215131 in words is "two million, two hundred fifteen thousand, one hundred thirty-one".