103387961 has 2 divisors, whose sum is σ = 103387962. Its totient is φ = 103387960.

The previous prime is 103387939. The next prime is 103387979. The reversal of 103387961 is 169783301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87235600 + 16152361 = 9340^2 + 4019^2 .

It is a cyclic number.

It is not a de Polignac number, because 103387961 - 2¹⁰ = 103386937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (103387981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51693980 + 51693981.

It is an arithmetic number, because the mean of its divisors is an integer number (51693981).

Almost surely, 2^103387961 is an apocalyptic number.

It is an amenable number.

103387961 is a deficient number, since it is larger than the sum of its proper divisors (1).

103387961 is an equidigital number, since it uses as much as digits as its factorization.

103387961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 103387961 is about 10167.9870672616. The cubic root of 103387961 is about 469.3426164905.

The spelling of 103387961 in words is "one hundred three million, three hundred eighty-seven thousand, nine hundred sixty-one".