213333333923 has 2 divisors, whose sum is σ = 213333333924. Its totient is φ = 213333333922.

The previous prime is 213333333887. The next prime is 213333333947. The reversal of 213333333923 is 329333333312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213333333923 - 2¹⁰ = 213333332899 is a prime.

It is a super-2 number, since 2×213333333923² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213333333953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106666666961 + 106666666962.

It is an arithmetic number, because the mean of its divisors is an integer number (106666666962).

Almost surely, 2^213333333923 is an apocalyptic number.

213333333923 is a deficient number, since it is larger than the sum of its proper divisors (1).

213333333923 is an equidigital number, since it uses as much as digits as its factorization.

213333333923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 38.

The spelling of 213333333923 in words is "two hundred thirteen billion, three hundred thirty-three million, three hundred thirty-three thousand, nine hundred twenty-three".