3220404731 has 16 divisors (see below), whose sum is σ = 3518242560. Its totient is φ = 2938283040.

The previous prime is 3220404697. The next prime is 3220404739. The reversal of 3220404731 is 1374040223.

It is a cyclic number.

It is not a de Polignac number, because 3220404731 - 2¹⁸ = 3220142587 is a prime.

It is a super-2 number, since 2×3220404731² = 20742013262894364722, 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 3220404731.

It is not an unprimeable number, because it can be changed into a prime (3220404739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26276 + ... + 84446.

It is an arithmetic number, because the mean of its divisors is an integer number (219890160).

Almost surely, 2^3220404731 is an apocalyptic number.

3220404731 is a deficient number, since it is larger than the sum of its proper divisors (297837829).

3220404731 is a wasteful number, since it uses less digits than its factorization.

3220404731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58306.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 3220404731 is about 56748.6099477335. The cubic root of 3220404731 is about 1476.7381185599.

Adding to 3220404731 its reverse (1374040223), we get a palindrome (4594444954).

The spelling of 3220404731 in words is "three billion, two hundred twenty million, four hundred four thousand, seven hundred thirty-one".