103209971 has 2 divisors, whose sum is σ = 103209972. Its totient is φ = 103209970.

The previous prime is 103209959. The next prime is 103209989. The reversal of 103209971 is 179902301.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103209971 - 2¹⁸ = 102947827 is a prime.

It is a super-2 number, since 2×103209971² = 21304596227641682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103289971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51604985 + 51604986.

It is an arithmetic number, because the mean of its divisors is an integer number (51604986).

Almost surely, 2^103209971 is an apocalyptic number.

103209971 is a deficient number, since it is larger than the sum of its proper divisors (1).

103209971 is an equidigital number, since it uses as much as digits as its factorization.

103209971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 103209971 is about 10159.2308271837. The cubic root of 103209971 is about 469.0731258054.

The spelling of 103209971 in words is "one hundred three million, two hundred nine thousand, nine hundred seventy-one".