3112288661 has 4 divisors (see below), whose sum is σ = 3151684800. Its totient is φ = 3072892524.

The previous prime is 3112288657. The next prime is 3112288681. The reversal of 3112288661 is 1668822113.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1668822113 = 7 ⋅238403159.

It is a cyclic number.

It is not a de Polignac number, because 3112288661 - 2² = 3112288657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112288681) 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, 19697951 + ... + 19698108.

It is an arithmetic number, because the mean of its divisors is an integer number (787921200).

Almost surely, 2^3112288661 is an apocalyptic number.

It is an amenable number.

3112288661 is a deficient number, since it is larger than the sum of its proper divisors (39396139).

3112288661 is an equidigital number, since it uses as much as digits as its factorization.

3112288661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39396138.

The product of its digits is 27648, while the sum is 38.

The square root of 3112288661 is about 55787.8899134929. The cubic root of 3112288661 is about 1460.0238722875.

The spelling of 3112288661 in words is "three billion, one hundred twelve million, two hundred eighty-eight thousand, six hundred sixty-one".