213512357 has 2 divisors, whose sum is σ = 213512358. Its totient is φ = 213512356.

The previous prime is 213512353. The next prime is 213512389. The reversal of 213512357 is 753215312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138274081 + 75238276 = 11759^2 + 8674^2 .

It is a cyclic number.

It is not a de Polignac number, because 213512357 - 2² = 213512353 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213512353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106756178 + 106756179.

It is an arithmetic number, because the mean of its divisors is an integer number (106756179).

Almost surely, 2^213512357 is an apocalyptic number.

It is an amenable number.

213512357 is a deficient number, since it is larger than the sum of its proper divisors (1).

213512357 is an equidigital number, since it uses as much as digits as its factorization.

213512357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 213512357 is about 14612.0620379192. The cubic root of 213512357 is about 597.6877272904.

Adding to 213512357 its reverse (753215312), we get a palindrome (966727669).

The spelling of 213512357 in words is "two hundred thirteen million, five hundred twelve thousand, three hundred fifty-seven".