213122434 has 32 divisors (see below), whose sum is σ = 373766400. Its totient is φ = 89249472.

The previous prime is 213122431. The next prime is 213122443. The reversal of 213122434 is 434221312.

It is not an unprimeable number, because it can be changed into a prime (213122431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258547 + ... + 259369.

It is an arithmetic number, because the mean of its divisors is an integer number (11680200).

Almost surely, 2^213122434 is an apocalyptic number.

213122434 is a deficient number, since it is larger than the sum of its proper divisors (160643966).

213122434 is a wasteful number, since it uses less digits than its factorization.

213122434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its digits is 1152, while the sum is 22.

The square root of 213122434 is about 14598.7134364642. The cubic root of 213122434 is about 597.3236668551.

Adding to 213122434 its reverse (434221312), we get a palindrome (647343746).

The spelling of 213122434 in words is "two hundred thirteen million, one hundred twenty-two thousand, four hundred thirty-four".