4103121391 has 2 divisors, whose sum is σ = 4103121392. Its totient is φ = 4103121390.

The previous prime is 4103121389. The next prime is 4103121443. The reversal of 4103121391 is 1931213014.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4103121391 - 2¹ = 4103121389 is a prime.

Together with 4103121389, 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 (4103121331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2051560695 + 2051560696.

It is an arithmetic number, because the mean of its divisors is an integer number (2051560696).

Almost surely, 2^4103121391 is an apocalyptic number.

4103121391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4103121391 is an equidigital number, since it uses as much as digits as its factorization.

4103121391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 4103121391 is about 64055.6117057670. The cubic root of 4103121391 is about 1600.9267275845.

The spelling of 4103121391 in words is "four billion, one hundred three million, one hundred twenty-one thousand, three hundred ninety-one".