213412357 has 2 divisors, whose sum is σ = 213412358. Its totient is φ = 213412356.

The previous prime is 213412333. The next prime is 213412379. The reversal of 213412357 is 753214312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207331201 + 6081156 = 14399^2 + 2466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213412357 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 (213412457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106706178 + 106706179.

It is an arithmetic number, because the mean of its divisors is an integer number (106706179).

Almost surely, 2^213412357 is an apocalyptic number.

It is an amenable number.

213412357 is a deficient number, since it is larger than the sum of its proper divisors (1).

213412357 is an equidigital number, since it uses as much as digits as its factorization.

213412357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 213412357 is about 14608.6398066350. The cubic root of 213412357 is about 597.5944023153.

Adding to 213412357 its reverse (753214312), we get a palindrome (966626669).

The spelling of 213412357 in words is "two hundred thirteen million, four hundred twelve thousand, three hundred fifty-seven".