103165399 has 2 divisors, whose sum is σ = 103165400. Its totient is φ = 103165398.

The previous prime is 103165379. The next prime is 103165451. The reversal of 103165399 is 993561301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103165399 - 2²³ = 94776791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103165379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51582699 + 51582700.

It is an arithmetic number, because the mean of its divisors is an integer number (51582700).

Almost surely, 2^103165399 is an apocalyptic number.

103165399 is a deficient number, since it is larger than the sum of its proper divisors (1).

103165399 is an equidigital number, since it uses as much as digits as its factorization.

103165399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 103165399 is about 10157.0369202834. The cubic root of 103165399 is about 469.0055918337.

It can be divided in two parts, 1031 and 65399, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 103165399 in words is "one hundred three million, one hundred sixty-five thousand, three hundred ninety-nine".