213103051 has 4 divisors (see below), whose sum is σ = 243546352. Its totient is φ = 182659752.

The previous prime is 213103039. The next prime is 213103057. The reversal of 213103051 is 150301312.

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 213103051 - 2¹³ = 213094859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213103057) 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, 15221640 + ... + 15221653.

It is an arithmetic number, because the mean of its divisors is an integer number (60886588).

Almost surely, 2^213103051 is an apocalyptic number.

213103051 is a deficient number, since it is larger than the sum of its proper divisors (30443301).

213103051 is an equidigital number, since it uses as much as digits as its factorization.

213103051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30443300.

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

The square root of 213103051 is about 14598.0495614996. The cubic root of 213103051 is about 597.3055578971.

Adding to 213103051 its reverse (150301312), we get a palindrome (363404363).

The spelling of 213103051 in words is "two hundred thirteen million, one hundred three thousand, fifty-one".