3121103551 has 2 divisors, whose sum is σ = 3121103552. Its totient is φ = 3121103550.

The previous prime is 3121103549. The next prime is 3121103561. The reversal of 3121103551 is 1553011213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3121103551 - 2¹ = 3121103549 is a prime.

Together with 3121103549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121103501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560551775 + 1560551776.

It is an arithmetic number, because the mean of its divisors is an integer number (1560551776).

Almost surely, 2^3121103551 is an apocalyptic number.

3121103551 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121103551 is an equidigital number, since it uses as much as digits as its factorization.

3121103551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 3121103551 is about 55866.8376677972. The cubic root of 3121103551 is about 1461.4009744629.

Adding to 3121103551 its reverse (1553011213), we get a palindrome (4674114764).

The spelling of 3121103551 in words is "three billion, one hundred twenty-one million, one hundred three thousand, five hundred fifty-one".