103978181 has 2 divisors, whose sum is σ = 103978182. Its totient is φ = 103978180.

The previous prime is 103978129. The next prime is 103978201. The reversal of 103978181 is 181879301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84916225 + 19061956 = 9215^2 + 4366^2 .

It is a cyclic number.

It is not a de Polignac number, because 103978181 - 2¹⁴ = 103961797 is a prime.

It is a super-2 number, since 2×103978181² = 21622924248137522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103978111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51989090 + 51989091.

It is an arithmetic number, because the mean of its divisors is an integer number (51989091).

Almost surely, 2^103978181 is an apocalyptic number.

It is an amenable number.

103978181 is a deficient number, since it is larger than the sum of its proper divisors (1).

103978181 is an equidigital number, since it uses as much as digits as its factorization.

103978181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 38.

The square root of 103978181 is about 10196.9692065829. The cubic root of 103978181 is about 470.2340482110.

The spelling of 103978181 in words is "one hundred three million, nine hundred seventy-eight thousand, one hundred eighty-one".