232216409 has 2 divisors, whose sum is σ = 232216410. Its totient is φ = 232216408.

The previous prime is 232216399. The next prime is 232216451. The reversal of 232216409 is 904612232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225840784 + 6375625 = 15028^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 232216409 - 2⁴ = 232216393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (232216459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116108204 + 116108205.

It is an arithmetic number, because the mean of its divisors is an integer number (116108205).

Almost surely, 2^232216409 is an apocalyptic number.

It is an amenable number.

232216409 is a deficient number, since it is larger than the sum of its proper divisors (1).

232216409 is an equidigital number, since it uses as much as digits as its factorization.

232216409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 232216409 is about 15238.6485293152. The cubic root of 232216409 is about 614.6543623749.

The spelling of 232216409 in words is "two hundred thirty-two million, two hundred sixteen thousand, four hundred nine".