63871123 has 4 divisors (see below), whose sum is σ = 64008360. Its totient is φ = 63733888.

The previous prime is 63871109. The next prime is 63871127. The reversal of 63871123 is 32117836.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63871123 is a prime.

It is a super-2 number, since 2×63871123² = 8159040706562258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63871127) 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, 67918 + ... + 68851.

It is an arithmetic number, because the mean of its divisors is an integer number (16002090).

Almost surely, 2^63871123 is an apocalyptic number.

63871123 is a deficient number, since it is larger than the sum of its proper divisors (137237).

63871123 is a wasteful number, since it uses less digits than its factorization.

63871123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137236.

The product of its digits is 6048, while the sum is 31.

The square root of 63871123 is about 7991.9411284118. The cubic root of 63871123 is about 399.7313258259.

Adding to 63871123 its reverse (32117836), we get a palindrome (95988959).

The spelling of 63871123 in words is "sixty-three million, eight hundred seventy-one thousand, one hundred twenty-three".