213134323 has 2 divisors, whose sum is σ = 213134324. Its totient is φ = 213134322.

The previous prime is 213134309. The next prime is 213134329. The reversal of 213134323 is 323431312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213134323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213134294 and 213134303.

It is not a weakly prime, because it can be changed into another prime (213134329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106567161 + 106567162.

It is an arithmetic number, because the mean of its divisors is an integer number (106567162).

Almost surely, 2^213134323 is an apocalyptic number.

213134323 is a deficient number, since it is larger than the sum of its proper divisors (1).

213134323 is an equidigital number, since it uses as much as digits as its factorization.

213134323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 22.

The square root of 213134323 is about 14599.1206242020. The cubic root of 213134323 is about 597.3347738495.

Adding to 213134323 its reverse (323431312), we get a palindrome (536565635).

The spelling of 213134323 in words is "two hundred thirteen million, one hundred thirty-four thousand, three hundred twenty-three".