3320131661 has 24 divisors (see below), whose sum is σ = 4316094720. Its totient is φ = 2523998400.

The previous prime is 3320131643. The next prime is 3320131669. The reversal of 3320131661 is 1661310233.

It is not a de Polignac number, because 3320131661 - 2⁶ = 3320131597 is a prime.

It is a super-2 number, since 2×3320131661² = 22046548492749237842, 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 3320131661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3320131669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53021 + ... + 97218.

It is an arithmetic number, because the mean of its divisors is an integer number (179837280).

Almost surely, 2^3320131661 is an apocalyptic number.

It is an amenable number.

3320131661 is a deficient number, since it is larger than the sum of its proper divisors (995963059).

3320131661 is a wasteful number, since it uses less digits than its factorization.

3320131661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150305 (or 150298 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 3320131661 is about 57620.5836572314. The cubic root of 3320131661 is about 1491.8269050809.

Adding to 3320131661 its reverse (1661310233), we get a palindrome (4981441894).

The spelling of 3320131661 in words is "three billion, three hundred twenty million, one hundred thirty-one thousand, six hundred sixty-one".