213140177 has 2 divisors, whose sum is σ = 213140178. Its totient is φ = 213140176.

The previous prime is 213140171. The next prime is 213140209. The reversal of 213140177 is 771041312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158734801 + 54405376 = 12599^2 + 7376^2 .

It is a cyclic number.

It is not a de Polignac number, because 213140177 - 2⁶ = 213140113 is a prime.

It is not a weakly prime, because it can be changed into another prime (213140171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106570088 + 106570089.

It is an arithmetic number, because the mean of its divisors is an integer number (106570089).

Almost surely, 2^213140177 is an apocalyptic number.

It is an amenable number.

213140177 is a deficient number, since it is larger than the sum of its proper divisors (1).

213140177 is an equidigital number, since it uses as much as digits as its factorization.

213140177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 213140177 is about 14599.3211143532. The cubic root of 213140177 is about 597.3402426476.

Adding to 213140177 its reverse (771041312), we get a palindrome (984181489).

The spelling of 213140177 in words is "two hundred thirteen million, one hundred forty thousand, one hundred seventy-seven".