102503311 has 4 divisors (see below), whose sum is σ = 102881824. Its totient is φ = 102124800.

The previous prime is 102503281. The next prime is 102503333. The reversal of 102503311 is 113305201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102503311 - 2⁵ = 102503279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102503411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188850 + ... + 189391.

It is an arithmetic number, because the mean of its divisors is an integer number (25720456).

Almost surely, 2^102503311 is an apocalyptic number.

102503311 is a deficient number, since it is larger than the sum of its proper divisors (378513).

102503311 is an equidigital number, since it uses as much as digits as its factorization.

102503311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378512.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 102503311 is about 10124.3918829725. The cubic root of 102503311 is about 468.0001202303. Note that the first 3 decimals are identical.

Adding to 102503311 its reverse (113305201), we get a palindrome (215808512).

The spelling of 102503311 in words is "one hundred two million, five hundred three thousand, three hundred eleven".