3196128881 has 4 divisors (see below), whose sum is σ = 3486686064. Its totient is φ = 2905571700.

The previous prime is 3196128781. The next prime is 3196128893. The reversal of 3196128881 is 1888216913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3196128881 is a prime.

It is a super-2 number, since 2×3196128881² = 20430479647924624322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3196128181) 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, 145278575 + ... + 145278596.

It is an arithmetic number, because the mean of its divisors is an integer number (871671516).

Almost surely, 2^3196128881 is an apocalyptic number.

It is an amenable number.

3196128881 is a deficient number, since it is larger than the sum of its proper divisors (290557183).

3196128881 is a wasteful number, since it uses less digits than its factorization.

3196128881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290557182.

The product of its digits is 165888, while the sum is 47.

The square root of 3196128881 is about 56534.3159594241. The cubic root of 3196128881 is about 1473.0181378329.

The spelling of 3196128881 in words is "three billion, one hundred ninety-six million, one hundred twenty-eight thousand, eight hundred eighty-one".