213333023 has 4 divisors (see below), whose sum is σ = 213707208. Its totient is φ = 212958840.

The previous prime is 213332993. The next prime is 213333143. The reversal of 213333023 is 320333312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213333023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213332986 and 213333004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213333223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186236 + ... + 187377.

It is an arithmetic number, because the mean of its divisors is an integer number (53426802).

Almost surely, 2^213333023 is an apocalyptic number.

213333023 is a deficient number, since it is larger than the sum of its proper divisors (374185).

213333023 is an equidigital number, since it uses as much as digits as its factorization.

213333023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374184.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 213333023 is about 14605.9242432651. The cubic root of 213333023 is about 597.5203431389.

Adding to 213333023 its reverse (320333312), we get a palindrome (533666335).

The spelling of 213333023 in words is "two hundred thirteen million, three hundred thirty-three thousand, twenty-three".