63013281 has 8 divisors (see below), whose sum is σ = 85201344. Its totient is φ = 41417040.

The previous prime is 63013241. The next prime is 63013283. The reversal of 63013281 is 18231036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63013281 - 2⁶ = 63013217 is a prime.

It is a super-2 number, since 2×63013281² = 7941347164769922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63013283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147706 + ... + 148131.

It is an arithmetic number, because the mean of its divisors is an integer number (10650168).

Almost surely, 2^63013281 is an apocalyptic number.

It is an amenable number.

63013281 is a deficient number, since it is larger than the sum of its proper divisors (22188063).

63013281 is a wasteful number, since it uses less digits than its factorization.

63013281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295911.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 63013281 is about 7938.0905134673. The cubic root of 63013281 is about 397.9336795969.

The spelling of 63013281 in words is "sixty-three million, thirteen thousand, two hundred eighty-one".