213031034 has 4 divisors (see below), whose sum is σ = 319546554. Its totient is φ = 106515516.

The previous prime is 213031031. The next prime is 213031043. The reversal of 213031034 is 430130312.

It is a happy number.

213031034 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 only one way, i.e., 121771225 + 91259809 = 11035^2 + 9553^2 .

It is not an unprimeable number, because it can be changed into a prime (213031031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53257757 + ... + 53257760.

Almost surely, 2^213031034 is an apocalyptic number.

213031034 is a deficient number, since it is larger than the sum of its proper divisors (106515520).

213031034 is a wasteful number, since it uses less digits than its factorization.

213031034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106515519.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 213031034 is about 14595.5826879231. The cubic root of 213031034 is about 597.2382649438.

Adding to 213031034 its reverse (430130312), we get a palindrome (643161346).

The spelling of 213031034 in words is "two hundred thirteen million, thirty-one thousand, thirty-four".