103278997 has 2 divisors, whose sum is σ = 103278998. Its totient is φ = 103278996.

The previous prime is 103278983. The next prime is 103279009. The reversal of 103278997 is 799872301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103042801 + 236196 = 10151^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 103278997 - 2¹⁵ = 103246229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103278977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51639498 + 51639499.

It is an arithmetic number, because the mean of its divisors is an integer number (51639499).

Almost surely, 2^103278997 is an apocalyptic number.

It is an amenable number.

103278997 is a deficient number, since it is larger than the sum of its proper divisors (1).

103278997 is an equidigital number, since it uses as much as digits as its factorization.

103278997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 103278997 is about 10162.6274653753. The cubic root of 103278997 is about 469.1776732822.

The spelling of 103278997 in words is "one hundred three million, two hundred seventy-eight thousand, nine hundred ninety-seven".