516231871 has 12 divisors (see below), whose sum is σ = 551921344. Its totient is φ = 482328000.

The previous prime is 516231853. The next prime is 516231889. The reversal of 516231871 is 178132615.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (516231853) and next prime (516231889).

It is a de Polignac number, because none of the positive numbers 2^k-516231871 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516231811) 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 11 ways as a sum of consecutive naturals, for example, 16171 + ... + 35971.

Almost surely, 2^516231871 is an apocalyptic number.

516231871 is a deficient number, since it is larger than the sum of its proper divisors (35689473).

516231871 is a wasteful number, since it uses less digits than its factorization.

516231871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19890 (or 19861 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 516231871 is about 22720.7365857712. The cubic root of 516231871 is about 802.1980546428.

The spelling of 516231871 in words is "five hundred sixteen million, two hundred thirty-one thousand, eight hundred seventy-one".