213134455 has 16 divisors (see below), whose sum is σ = 267208704. Its totient is φ = 163009440.

The previous prime is 213134447. The next prime is 213134459. The reversal of 213134455 is 554431312.

It is not a de Polignac number, because 213134455 - 2³ = 213134447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213134459) 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, 4582 + ... + 21148.

It is an arithmetic number, because the mean of its divisors is an integer number (16700544).

Almost surely, 2^213134455 is an apocalyptic number.

213134455 is a deficient number, since it is larger than the sum of its proper divisors (54074249).

213134455 is a wasteful number, since it uses less digits than its factorization.

213134455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16686.

The product of its digits is 7200, while the sum is 28.

The square root of 213134455 is about 14599.1251450215. The cubic root of 213134455 is about 597.3348971648.

Adding to 213134455 its reverse (554431312), we get a palindrome (767565767).

The spelling of 213134455 in words is "two hundred thirteen million, one hundred thirty-four thousand, four hundred fifty-five".