213122433 has 8 divisors (see below), whose sum is σ = 285592000. Its totient is φ = 141367248.

The previous prime is 213122431. The next prime is 213122443. The reversal of 213122433 is 334221312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213122433 - 2¹ = 213122431 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 177898 + ... + 179091.

It is an arithmetic number, because the mean of its divisors is an integer number (35699000).

Almost surely, 2^213122433 is an apocalyptic number.

It is an amenable number.

213122433 is a deficient number, since it is larger than the sum of its proper divisors (72469567).

213122433 is a wasteful number, since it uses less digits than its factorization.

213122433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357191.

The product of its digits is 864, while the sum is 21.

The square root of 213122433 is about 14598.7134022146. The cubic root of 213122433 is about 597.3236659209.

Adding to 213122433 its reverse (334221312), we get a palindrome (547343745).

The spelling of 213122433 in words is "two hundred thirteen million, one hundred twenty-two thousand, four hundred thirty-three".