3121320079 has 2 divisors, whose sum is σ = 3121320080. Its totient is φ = 3121320078.

The previous prime is 3121320061. The next prime is 3121320091. The reversal of 3121320079 is 9700231213.

It is a strong prime.

It is an emirp because it is prime and its reverse (9700231213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3121320079 - 2²¹ = 3119222927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121320379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560660039 + 1560660040.

It is an arithmetic number, because the mean of its divisors is an integer number (1560660040).

Almost surely, 2^3121320079 is an apocalyptic number.

3121320079 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121320079 is an equidigital number, since it uses as much as digits as its factorization.

3121320079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 3121320079 is about 55868.7755280174. The cubic root of 3121320079 is about 1461.4347688039.

The spelling of 3121320079 in words is "three billion, one hundred twenty-one million, three hundred twenty thousand, seventy-nine".