102209347 has 2 divisors, whose sum is σ = 102209348. Its totient is φ = 102209346.

The previous prime is 102209339. The next prime is 102209353. The reversal of 102209347 is 743902201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102209347 - 2³ = 102209339 is a prime.

It is a super-2 number, since 2×102209347² = 20893501228332818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102209357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51104673 + 51104674.

It is an arithmetic number, because the mean of its divisors is an integer number (51104674).

Almost surely, 2^102209347 is an apocalyptic number.

102209347 is a deficient number, since it is larger than the sum of its proper divisors (1).

102209347 is an equidigital number, since it uses as much as digits as its factorization.

102209347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 102209347 is about 10109.8638467588. The cubic root of 102209347 is about 467.5523073389.

The spelling of 102209347 in words is "one hundred two million, two hundred nine thousand, three hundred forty-seven".