213425233 has 16 divisors (see below), whose sum is σ = 262000000. Its totient is φ = 173302416.

The previous prime is 213425231. The next prime is 213425281. The reversal of 213425233 is 332524312.

It is not a de Polignac number, because 213425233 - 2¹ = 213425231 is a prime.

It is a super-2 number, since 2×213425233² = 91100660162208578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213425198 and 213425207.

It is not an unprimeable number, because it can be changed into a prime (213425231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9858 + ... + 22891.

It is an arithmetic number, because the mean of its divisors is an integer number (16375000).

Almost surely, 2^213425233 is an apocalyptic number.

It is an amenable number.

213425233 is a deficient number, since it is larger than the sum of its proper divisors (48574767).

213425233 is an equidigital number, since it uses as much as digits as its factorization.

213425233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32789 (or 32775 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 213425233 is about 14609.0804981012. The cubic root of 213425233 is about 597.6064204741.

Adding to 213425233 its reverse (332524312), we get a palindrome (545949545).

The spelling of 213425233 in words is "two hundred thirteen million, four hundred twenty-five thousand, two hundred thirty-three".