200421311 has 2 divisors, whose sum is σ = 200421312. Its totient is φ = 200421310.

The previous prime is 200421307. The next prime is 200421383. The reversal of 200421311 is 113124002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200421311 - 2² = 200421307 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200421391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100210655 + 100210656.

It is an arithmetic number, because the mean of its divisors is an integer number (100210656).

Almost surely, 2^200421311 is an apocalyptic number.

200421311 is a deficient number, since it is larger than the sum of its proper divisors (1).

200421311 is an equidigital number, since it uses as much as digits as its factorization.

200421311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 200421311 is about 14157.0233806404. The cubic root of 200421311 is about 585.2138999132.

Adding to 200421311 its reverse (113124002), we get a palindrome (313545313).

The spelling of 200421311 in words is "two hundred million, four hundred twenty-one thousand, three hundred eleven".