102103213 has 4 divisors (see below), whose sum is σ = 102200508. Its totient is φ = 102005920.

The previous prime is 102103201. The next prime is 102103219. The reversal of 102103213 is 312301201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84235684 + 17867529 = 9178^2 + 4227^2 .

It is a cyclic number.

It is not a de Polignac number, because 102103213 - 2¹⁷ = 101972141 is a prime.

It is a super-2 number, since 2×102103213² = 20850132209846738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102103193 and 102103202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102103219) 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, 47056 + ... + 49177.

It is an arithmetic number, because the mean of its divisors is an integer number (25550127).

Almost surely, 2^102103213 is an apocalyptic number.

It is an amenable number.

102103213 is a deficient number, since it is larger than the sum of its proper divisors (97295).

102103213 is an equidigital number, since it uses as much as digits as its factorization.

102103213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97294.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 102103213 is about 10104.6134512905. The cubic root of 102103213 is about 467.3904161350.

Adding to 102103213 its reverse (312301201), we get a palindrome (414404414).

The spelling of 102103213 in words is "one hundred two million, one hundred three thousand, two hundred thirteen".