213040441 has 2 divisors, whose sum is σ = 213040442. Its totient is φ = 213040440.

The previous prime is 213040433. The next prime is 213040459. The reversal of 213040441 is 144040312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174240000 + 38800441 = 13200^2 + 6229^2 .

It is a cyclic number.

It is not a de Polignac number, because 213040441 - 2³ = 213040433 is a prime.

It is not a weakly prime, because it can be changed into another prime (213040741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106520220 + 106520221.

It is an arithmetic number, because the mean of its divisors is an integer number (106520221).

Almost surely, 2^213040441 is an apocalyptic number.

It is an amenable number.

213040441 is a deficient number, since it is larger than the sum of its proper divisors (1).

213040441 is an equidigital number, since it uses as much as digits as its factorization.

213040441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 213040441 is about 14595.9049394000. The cubic root of 213040441 is about 597.2470557407.

Adding to 213040441 its reverse (144040312), we get a palindrome (357080753).

The spelling of 213040441 in words is "two hundred thirteen million, forty thousand, four hundred forty-one".