211253103 has 20 divisors (see below), whose sum is σ = 318652048. Its totient is φ = 139462560.

The previous prime is 211253093. The next prime is 211253113. The reversal of 211253103 is 301352112.

It is an interprime number because it is at equal distance from previous prime (211253093) and next prime (211253113).

It is not a de Polignac number, because 211253103 - 2⁴ = 211253087 is a prime.

It is a super-3 number, since 3×211253103³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211253113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4318 + ... + 21003.

Almost surely, 2^211253103 is an apocalyptic number.

211253103 is a deficient number, since it is larger than the sum of its proper divisors (107398945).

211253103 is a wasteful number, since it uses less digits than its factorization.

211253103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25436 (or 25427 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 211253103 is about 14534.5485998018. The cubic root of 211253103 is about 595.5721286412.

Subtracting 211253103 from its reverse (301352112), we obtain a palindrome (90099009).

The spelling of 211253103 in words is "two hundred eleven million, two hundred fifty-three thousand, one hundred three".