102503213 has 2 divisors, whose sum is σ = 102503214. Its totient is φ = 102503212.

The previous prime is 102503201. The next prime is 102503221. The reversal of 102503213 is 312305201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86527204 + 15976009 = 9302^2 + 3997^2 .

It is a cyclic number.

It is not a de Polignac number, because 102503213 - 2²⁰ = 101454637 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 102503191 and 102503200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102503243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51251606 + 51251607.

It is an arithmetic number, because the mean of its divisors is an integer number (51251607).

Almost surely, 2^102503213 is an apocalyptic number.

It is an amenable number.

102503213 is a deficient number, since it is larger than the sum of its proper divisors (1).

102503213 is an equidigital number, since it uses as much as digits as its factorization.

102503213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 102503213 is about 10124.3870431745. The cubic root of 102503213 is about 467.9999710838. Note that the first 4 decimals are identical.

Adding to 102503213 its reverse (312305201), we get a palindrome (414808414).

The spelling of 102503213 in words is "one hundred two million, five hundred three thousand, two hundred thirteen".