3220604731 has 8 divisors (see below), whose sum is σ = 3282748560. Its totient is φ = 3158512032.

The previous prime is 3220604707. The next prime is 3220604741. The reversal of 3220604731 is 1374060223.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3220604731 is a prime.

It is a super-2 number, since 2×3220604731² = 20744589666679164722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3220604731.

It is not an unprimeable number, because it can be changed into a prime (3220604701) 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, 129501 + ... + 152353.

It is an arithmetic number, because the mean of its divisors is an integer number (410343570).

Almost surely, 2^3220604731 is an apocalyptic number.

3220604731 is a deficient number, since it is larger than the sum of its proper divisors (62143829).

3220604731 is a wasteful number, since it uses less digits than its factorization.

3220604731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25565.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 3220604731 is about 56750.3720780754. The cubic root of 3220604731 is about 1476.7686883728.

Adding to 3220604731 its reverse (1374060223), we get a palindrome (4594664954).

The spelling of 3220604731 in words is "three billion, two hundred twenty million, six hundred four thousand, seven hundred thirty-one".