63331271 has 4 divisors (see below), whose sum is σ = 63467352. Its totient is φ = 63195192.

The previous prime is 63331253. The next prime is 63331283. The reversal of 63331271 is 17213336.

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 63331271 - 2²² = 59136967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63331271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63331291) 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, 67340 + ... + 68273.

It is an arithmetic number, because the mean of its divisors is an integer number (15866838).

Almost surely, 2^63331271 is an apocalyptic number.

63331271 is a deficient number, since it is larger than the sum of its proper divisors (136081).

63331271 is a wasteful number, since it uses less digits than its factorization.

63331271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136080.

The product of its digits is 2268, while the sum is 26.

The square root of 63331271 is about 7958.0946840308. The cubic root of 63331271 is about 398.6019338036.

The spelling of 63331271 in words is "sixty-three million, three hundred thirty-one thousand, two hundred seventy-one".