102309017 has 4 divisors (see below), whose sum is σ = 103986276. Its totient is φ = 100631760.

The previous prime is 102309007. The next prime is 102309019. The reversal of 102309017 is 710903201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 710903201 = 127 ⋅5597663.

It can be written as a sum of positive squares in 2 ways, for example, as 25290841 + 77018176 = 5029^2 + 8776^2 .

It is a cyclic number.

It is not a de Polignac number, because 102309017 - 2¹⁰ = 102307993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102308983 and 102309001.

It is not an unprimeable number, because it can be changed into a prime (102309019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838538 + ... + 838659.

It is an arithmetic number, because the mean of its divisors is an integer number (25996569).

Almost surely, 2^102309017 is an apocalyptic number.

It is an amenable number.

102309017 is a deficient number, since it is larger than the sum of its proper divisors (1677259).

102309017 is an equidigital number, since it uses as much as digits as its factorization.

102309017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677258.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 102309017 is about 10114.7919899521. The cubic root of 102309017 is about 467.7042366889.

The spelling of 102309017 in words is "one hundred two million, three hundred nine thousand, seventeen".