3121220327 has 2 divisors, whose sum is σ = 3121220328. Its totient is φ = 3121220326.

The previous prime is 3121220303. The next prime is 3121220329. The reversal of 3121220327 is 7230221213.

It is a strong prime.

It is an emirp because it is prime and its reverse (7230221213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121220327 is a prime.

Together with 3121220329, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121220329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560610163 + 1560610164.

It is an arithmetic number, because the mean of its divisors is an integer number (1560610164).

Almost surely, 2^3121220327 is an apocalyptic number.

3121220327 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121220327 is an equidigital number, since it uses as much as digits as its factorization.

3121220327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 3121220327 is about 55867.8827860874. The cubic root of 3121220327 is about 1461.4192003275.

The spelling of 3121220327 in words is "three billion, one hundred twenty-one million, two hundred twenty thousand, three hundred twenty-seven".