3216611245 has 4 divisors (see below), whose sum is σ = 3859933500. Its totient is φ = 2573288992.

The previous prime is 3216611221. The next prime is 3216611261. The reversal of 3216611245 is 5421166123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5421166123 = 4549 ⋅1191727.

It can be written as a sum of positive squares in 2 ways, for example, as 2504201764 + 712409481 = 50042^2 + 26691^2 .

It is a cyclic number.

It is not a de Polignac number, because 3216611245 - 2⁷ = 3216611117 is a prime.

It is a congruent number.

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, 321661120 + ... + 321661129.

It is an arithmetic number, because the mean of its divisors is an integer number (964983375).

Almost surely, 2^3216611245 is an apocalyptic number.

It is an amenable number.

3216611245 is a deficient number, since it is larger than the sum of its proper divisors (643322255).

3216611245 is an equidigital number, since it uses as much as digits as its factorization.

3216611245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643322254.

The product of its digits is 8640, while the sum is 31.

The square root of 3216611245 is about 56715.1764962430. The cubic root of 3216611245 is about 1476.1580479464.

Adding to 3216611245 its reverse (5421166123), we get a palindrome (8637777368).

The spelling of 3216611245 in words is "three billion, two hundred sixteen million, six hundred eleven thousand, two hundred forty-five".