213057023 has 2 divisors, whose sum is σ = 213057024. Its totient is φ = 213057022.

The previous prime is 213056993. The next prime is 213057029. The reversal of 213057023 is 320750312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213057023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213057023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213057029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106528511 + 106528512.

It is an arithmetic number, because the mean of its divisors is an integer number (106528512).

Almost surely, 2^213057023 is an apocalyptic number.

213057023 is a deficient number, since it is larger than the sum of its proper divisors (1).

213057023 is an equidigital number, since it uses as much as digits as its factorization.

213057023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 213057023 is about 14596.4729643842. The cubic root of 213057023 is about 597.2625509110.

The spelling of 213057023 in words is "two hundred thirteen million, fifty-seven thousand, twenty-three".