3261215 has 4 divisors (see below), whose sum is σ = 3913464. Its totient is φ = 2608968.

The previous prime is 3261211. The next prime is 3261221. The reversal of 3261215 is 5121623.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3261215 - 2² = 3261211 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326117 + ... + 326126.

It is an arithmetic number, because the mean of its divisors is an integer number (978366).

Almost surely, 2^3261215 is an apocalyptic number.

3261215 is a deficient number, since it is larger than the sum of its proper divisors (652249).

3261215 is an equidigital number, since it uses as much as digits as its factorization.

3261215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652248.

The product of its digits is 360, while the sum is 20.

The square root of 3261215 is about 1805.8834403139. The cubic root of 3261215 is about 148.2949893175.

Adding to 3261215 its reverse (5121623), we get a palindrome (8382838).

The spelling of 3261215 in words is "three million, two hundred sixty-one thousand, two hundred fifteen".