213433453 has 16 divisors (see below), whose sum is σ = 229236480. Its totient is φ = 198016000.

The previous prime is 213433433. The next prime is 213433469. The reversal of 213433453 is 354334312.

It is a de Polignac number, because none of the positive numbers 2^k-213433453 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 (213433433) 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, 532053 + ... + 532453.

It is an arithmetic number, because the mean of its divisors is an integer number (14327280).

Almost surely, 2^213433453 is an apocalyptic number.

It is an amenable number.

213433453 is a deficient number, since it is larger than the sum of its proper divisors (15803027).

213433453 is a wasteful number, since it uses less digits than its factorization.

213433453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788.

The product of its digits is 12960, while the sum is 28.

The square root of 213433453 is about 14609.3618272668. The cubic root of 213433453 is about 597.6140925781.

Adding to 213433453 its reverse (354334312), we get a palindrome (567767765).

The spelling of 213433453 in words is "two hundred thirteen million, four hundred thirty-three thousand, four hundred fifty-three".