213011234 has 16 divisors (see below), whose sum is σ = 334193472. Its totient is φ = 101635248.

The previous prime is 213011233. The next prime is 213011237. The reversal of 213011234 is 432110312.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213011233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15152 + ... + 25604.

It is an arithmetic number, because the mean of its divisors is an integer number (20887092).

Almost surely, 2^213011234 is an apocalyptic number.

213011234 is a deficient number, since it is larger than the sum of its proper divisors (121182238).

213011234 is a wasteful number, since it uses less digits than its factorization.

213011234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10921.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 213011234 is about 14594.9043847502. The cubic root of 213011234 is about 597.2197610920.

Adding to 213011234 its reverse (432110312), we get a palindrome (645121546).

The spelling of 213011234 in words is "two hundred thirteen million, eleven thousand, two hundred thirty-four".