418531213 has 2 divisors, whose sum is σ = 418531214. Its totient is φ = 418531212.

The previous prime is 418531199. The next prime is 418531229. The reversal of 418531213 is 312135814.

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., 233081289 + 185449924 = 15267^2 + 13618^2 .

It is a cyclic number.

It is not a de Polignac number, because 418531213 - 2⁵ = 418531181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418511213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209265606 + 209265607.

It is an arithmetic number, because the mean of its divisors is an integer number (209265607).

Almost surely, 2^418531213 is an apocalyptic number.

It is an amenable number.

418531213 is a deficient number, since it is larger than the sum of its proper divisors (1).

418531213 is an equidigital number, since it uses as much as digits as its factorization.

418531213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 418531213 is about 20458.0354139883. The cubic root of 418531213 is about 748.0132382770.

The spelling of 418531213 in words is "four hundred eighteen million, five hundred thirty-one thousand, two hundred thirteen".