213030101 has 4 divisors (see below), whose sum is σ = 213093804. Its totient is φ = 212966400.

The previous prime is 213030091. The next prime is 213030107. The reversal of 213030101 is 101030312.

213030101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 157527601 + 55502500 = 12551^2 + 7450^2 .

It is a cyclic number.

It is not a de Polignac number, because 213030101 - 2¹⁸ = 212767957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213030107) 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, 26540 + ... + 33621.

It is an arithmetic number, because the mean of its divisors is an integer number (53273451).

Almost surely, 2^213030101 is an apocalyptic number.

It is an amenable number.

213030101 is a deficient number, since it is larger than the sum of its proper divisors (63703).

213030101 is an equidigital number, since it uses as much as digits as its factorization.

213030101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63702.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 213030101 is about 14595.5507261631. The cubic root of 213030101 is about 597.2373930456.

Adding to 213030101 its reverse (101030312), we get a palindrome (314060413).

The spelling of 213030101 in words is "two hundred thirteen million, thirty thousand, one hundred one".