3121119997 has 2 divisors, whose sum is σ = 3121119998. Its totient is φ = 3121119996.

The previous prime is 3121119977. The next prime is 3121120031. The reversal of 3121119997 is 7999111213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3019392601 + 101727396 = 54949^2 + 10086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121119997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121119917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560559998 + 1560559999.

It is an arithmetic number, because the mean of its divisors is an integer number (1560559999).

Almost surely, 2^3121119997 is an apocalyptic number.

It is an amenable number.

3121119997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121119997 is an equidigital number, since it uses as much as digits as its factorization.

3121119997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 43.

The square root of 3121119997 is about 55866.9848568902. The cubic root of 3121119997 is about 1461.4035413069.

The spelling of 3121119997 in words is "three billion, one hundred twenty-one million, one hundred nineteen thousand, nine hundred ninety-seven".