63151231 has 24 divisors (see below), whose sum is σ = 78725360. Its totient is φ = 50181120.

The previous prime is 63151223. The next prime is 63151271. The reversal of 63151231 is 13215136.

It is a happy number.

It is not a de Polignac number, because 63151231 - 2³ = 63151223 is a prime.

It is a super-2 number, since 2×63151231² = 7976155953630722, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63151271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28831 + ... + 30943.

Almost surely, 2^63151231 is an apocalyptic number.

63151231 is a deficient number, since it is larger than the sum of its proper divisors (15574129).

63151231 is a wasteful number, since it uses less digits than its factorization.

63151231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167 (or 2156 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 63151231 is about 7946.7748804153. The cubic root of 63151231 is about 398.2238562063.

Adding to 63151231 its reverse (13215136), we get a palindrome (76366367).

The spelling of 63151231 in words is "sixty-three million, one hundred fifty-one thousand, two hundred thirty-one".