102730193 has 4 divisors (see below), whose sum is σ = 102950640. Its totient is φ = 102509748.

The previous prime is 102730171. The next prime is 102730223. The reversal of 102730193 is 391037201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102730193 - 2⁶ = 102730129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102730123) 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, 109523 + ... + 110456.

It is an arithmetic number, because the mean of its divisors is an integer number (25737660).

Almost surely, 2^102730193 is an apocalyptic number.

It is an amenable number.

102730193 is a deficient number, since it is larger than the sum of its proper divisors (220447).

102730193 is an equidigital number, since it uses as much as digits as its factorization.

102730193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220446.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 102730193 is about 10135.5904120086. The cubic root of 102730193 is about 468.3451580567.

Adding to 102730193 its reverse (391037201), we get a palindrome (493767394).

The spelling of 102730193 in words is "one hundred two million, seven hundred thirty thousand, one hundred ninety-three".