63872131 has 2 divisors, whose sum is σ = 63872132. Its totient is φ = 63872130.

The previous prime is 63872113. The next prime is 63872177. The reversal of 63872131 is 13127836.

Together with previous prime (63872113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63872131 - 2¹⁷ = 63741059 is a prime.

It is a super-2 number, since 2×63872131² = 8159298236962322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63872093 and 63872102.

It is not a weakly prime, because it can be changed into another prime (63872191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31936065 + 31936066.

It is an arithmetic number, because the mean of its divisors is an integer number (31936066).

Almost surely, 2^63872131 is an apocalyptic number.

63872131 is a deficient number, since it is larger than the sum of its proper divisors (1).

63872131 is an equidigital number, since it uses as much as digits as its factorization.

63872131 is an evil number, because the sum of its binary digits is even.

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

The square root of 63872131 is about 7992.0041916906. The cubic root of 63872131 is about 399.7334286387.

Adding to 63872131 its reverse (13127836), we get a palindrome (76999967).

The spelling of 63872131 in words is "sixty-three million, eight hundred seventy-two thousand, one hundred thirty-one".