213620371 has 2 divisors, whose sum is σ = 213620372. Its totient is φ = 213620370.

The previous prime is 213620261. The next prime is 213620377. The reversal of 213620371 is 173026312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213620371 - 2¹⁵ = 213587603 is a prime.

It is not a weakly prime, because it can be changed into another prime (213620377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106810185 + 106810186.

It is an arithmetic number, because the mean of its divisors is an integer number (106810186).

Almost surely, 2^213620371 is an apocalyptic number.

213620371 is a deficient number, since it is larger than the sum of its proper divisors (1).

213620371 is an equidigital number, since it uses as much as digits as its factorization.

213620371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 213620371 is about 14615.7576266166. The cubic root of 213620371 is about 597.7884985988.

Adding to 213620371 its reverse (173026312), we get a palindrome (386646683).

The spelling of 213620371 in words is "two hundred thirteen million, six hundred twenty thousand, three hundred seventy-one".