2331112661 has 2 divisors, whose sum is σ = 2331112662. Its totient is φ = 2331112660.

The previous prime is 2331112631. The next prime is 2331112681. The reversal of 2331112661 is 1662111332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1954170436 + 376942225 = 44206^2 + 19415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2331112661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2331112661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2331112631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165556330 + 1165556331.

It is an arithmetic number, because the mean of its divisors is an integer number (1165556331).

Almost surely, 2^2331112661 is an apocalyptic number.

It is an amenable number.

2331112661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331112661 is an equidigital number, since it uses as much as digits as its factorization.

2331112661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 2331112661 is about 48281.5975398495. The cubic root of 2331112661 is about 1325.9314984932.

Adding to 2331112661 its reverse (1662111332), we get a palindrome (3993223993).

The spelling of 2331112661 in words is "two billion, three hundred thirty-one million, one hundred twelve thousand, six hundred sixty-one".