213738023 has 2 divisors, whose sum is σ = 213738024. Its totient is φ = 213738022.

The previous prime is 213738017. The next prime is 213738037. The reversal of 213738023 is 320837312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213738023 - 2⁶ = 213737959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213738223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106869011 + 106869012.

It is an arithmetic number, because the mean of its divisors is an integer number (106869012).

Almost surely, 2^213738023 is an apocalyptic number.

213738023 is a deficient number, since it is larger than the sum of its proper divisors (1).

213738023 is an equidigital number, since it uses as much as digits as its factorization.

213738023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 213738023 is about 14619.7819067180. The cubic root of 213738023 is about 597.8982230044.

The spelling of 213738023 in words is "two hundred thirteen million, seven hundred thirty-eight thousand, twenty-three".