103308887921 has 2 divisors, whose sum is σ = 103308887922. Its totient is φ = 103308887920.

The previous prime is 103308887863. The next prime is 103308887933. The reversal of 103308887921 is 129788803301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51899674225 + 51409213696 = 227815^2 + 226736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103308887921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103308887921.

It is not a weakly prime, because it can be changed into another prime (103308880921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51654443960 + 51654443961.

It is an arithmetic number, because the mean of its divisors is an integer number (51654443961).

Almost surely, 2^103308887921 is an apocalyptic number.

It is an amenable number.

103308887921 is a deficient number, since it is larger than the sum of its proper divisors (1).

103308887921 is an equidigital number, since it uses as much as digits as its factorization.

103308887921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 103308887921 in words is "one hundred three billion, three hundred eight million, eight hundred eighty-seven thousand, nine hundred twenty-one".