213555323 has 2 divisors, whose sum is σ = 213555324. Its totient is φ = 213555322.

The previous prime is 213555319. The next prime is 213555341. The reversal of 213555323 is 323555312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213555323 - 2² = 213555319 is a prime.

It is not a weakly prime, because it can be changed into another prime (213555313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106777661 + 106777662.

It is an arithmetic number, because the mean of its divisors is an integer number (106777662).

Almost surely, 2^213555323 is an apocalyptic number.

213555323 is a deficient number, since it is larger than the sum of its proper divisors (1).

213555323 is an equidigital number, since it uses as much as digits as its factorization.

213555323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 29.

The square root of 213555323 is about 14613.5321876677. The cubic root of 213555323 is about 597.7278163495.

The spelling of 213555323 in words is "two hundred thirteen million, five hundred fifty-five thousand, three hundred twenty-three".