213011389 has 2 divisors, whose sum is σ = 213011390. Its totient is φ = 213011388.

The previous prime is 213011369. The next prime is 213011453. The reversal of 213011389 is 983110312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157628025 + 55383364 = 12555^2 + 7442^2 .

It is a cyclic number.

It is not a de Polignac number, because 213011389 - 2¹¹ = 213009341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213011369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106505694 + 106505695.

It is an arithmetic number, because the mean of its divisors is an integer number (106505695).

Almost surely, 2^213011389 is an apocalyptic number.

It is an amenable number.

213011389 is a deficient number, since it is larger than the sum of its proper divisors (1).

213011389 is an equidigital number, since it uses as much as digits as its factorization.

213011389 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 28.

The square root of 213011389 is about 14594.9096948217. The cubic root of 213011389 is about 597.2199059499.

The spelling of 213011389 in words is "two hundred thirteen million, eleven thousand, three hundred eighty-nine".