63401311 has 4 divisors (see below), whose sum is σ = 63496192. Its totient is φ = 63306432.

The previous prime is 63401291. The next prime is 63401329. The reversal of 63401311 is 11310436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63401311 - 2⁷ = 63401183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63401111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46431 + ... + 47776.

It is an arithmetic number, because the mean of its divisors is an integer number (15874048).

Almost surely, 2^63401311 is an apocalyptic number.

63401311 is a deficient number, since it is larger than the sum of its proper divisors (94881).

63401311 is an equidigital number, since it uses as much as digits as its factorization.

63401311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94880.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 63401311 is about 7962.4940188361. The cubic root of 63401311 is about 398.7488217128.

Adding to 63401311 its reverse (11310436), we get a palindrome (74711747).

The spelling of 63401311 in words is "sixty-three million, four hundred one thousand, three hundred eleven".