63433231 has 2 divisors, whose sum is σ = 63433232. Its totient is φ = 63433230.

The previous prime is 63433219. The next prime is 63433259. The reversal of 63433231 is 13233436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63433231 - 2⁵ = 63433199 is a prime.

It is a super-2 number, since 2×63433231² = 8047549590198722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63433196 and 63433205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63433031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31716615 + 31716616.

It is an arithmetic number, because the mean of its divisors is an integer number (31716616).

Almost surely, 2^63433231 is an apocalyptic number.

63433231 is a deficient number, since it is larger than the sum of its proper divisors (1).

63433231 is an equidigital number, since it uses as much as digits as its factorization.

63433231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 25.

The square root of 63433231 is about 7964.4981637263. The cubic root of 63433231 is about 398.8157284626.

Adding to 63433231 its reverse (13233436), we get a palindrome (76666667).

The spelling of 63433231 in words is "sixty-three million, four hundred thirty-three thousand, two hundred thirty-one".