213040357 has 2 divisors, whose sum is σ = 213040358. Its totient is φ = 213040356.

The previous prime is 213040319. The next prime is 213040367. The reversal of 213040357 is 753040312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161645796 + 51394561 = 12714^2 + 7169^2 .

It is a cyclic number.

It is not a de Polignac number, because 213040357 - 2⁷ = 213040229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213040307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106520178 + 106520179.

It is an arithmetic number, because the mean of its divisors is an integer number (106520179).

Almost surely, 2^213040357 is an apocalyptic number.

It is an amenable number.

213040357 is a deficient number, since it is larger than the sum of its proper divisors (1).

213040357 is an equidigital number, since it uses as much as digits as its factorization.

213040357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 213040357 is about 14595.9020618802. The cubic root of 213040357 is about 597.2469772443.

Adding to 213040357 its reverse (753040312), we get a palindrome (966080669).

The spelling of 213040357 in words is "two hundred thirteen million, forty thousand, three hundred fifty-seven".