487471831 has 24 divisors (see below), whose sum is σ = 614111616. Its totient is φ = 375910320.

The previous prime is 487471813. The next prime is 487471841. The reversal of 487471831 is 138174784.

It is not a de Polignac number, because 487471831 - 2⁷ = 487471703 is a prime.

It is a super-2 number, since 2×487471831² = 475257572036985122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487471841) 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 23 ways as a sum of consecutive naturals, for example, 2147340 + ... + 2147566.

It is an arithmetic number, because the mean of its divisors is an integer number (25587984).

Almost surely, 2^487471831 is an apocalyptic number.

487471831 is a deficient number, since it is larger than the sum of its proper divisors (126639785).

487471831 is a wasteful number, since it uses less digits than its factorization.

487471831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 412 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 487471831 is about 22078.7642543689. The cubic root of 487471831 is about 787.0152991444.

The spelling of 487471831 in words is "four hundred eighty-seven million, four hundred seventy-one thousand, eight hundred thirty-one".