213102269 has 2 divisors, whose sum is σ = 213102270. Its totient is φ = 213102268.

The previous prime is 213102247. The next prime is 213102283. The reversal of 213102269 is 962201312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191822500 + 21279769 = 13850^2 + 4613^2 .

It is a cyclic number.

It is not a de Polignac number, because 213102269 - 2⁸ = 213102013 is a prime.

It is a super-3 number, since 3×213102269³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213102209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106551134 + 106551135.

It is an arithmetic number, because the mean of its divisors is an integer number (106551135).

Almost surely, 2^213102269 is an apocalyptic number.

It is an amenable number.

213102269 is a deficient number, since it is larger than the sum of its proper divisors (1).

213102269 is an equidigital number, since it uses as much as digits as its factorization.

213102269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 213102269 is about 14598.0227770750. The cubic root of 213102269 is about 597.3048272748.

The spelling of 213102269 in words is "two hundred thirteen million, one hundred two thousand, two hundred sixty-nine".