477131021 has 24 divisors (see below), whose sum is σ = 539639520. Its totient is φ = 420352416.

The previous prime is 477131009. The next prime is 477131029. The reversal of 477131021 is 120131774.

It is a happy number.

It is not a de Polignac number, because 477131021 - 2¹⁴ = 477114637 is a prime.

It is a super-2 number, since 2×477131021² = 455308022401004882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477131029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 371246 + ... + 372528.

It is an arithmetic number, because the mean of its divisors is an integer number (22484980).

Almost surely, 2^477131021 is an apocalyptic number.

It is an amenable number.

477131021 is a deficient number, since it is larger than the sum of its proper divisors (62508499).

477131021 is a wasteful number, since it uses less digits than its factorization.

477131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 477131021 is about 21843.3289816365. The cubic root of 477131021 is about 781.4104553118.

Adding to 477131021 its reverse (120131774), we get a palindrome (597262795).

The spelling of 477131021 in words is "four hundred seventy-seven million, one hundred thirty-one thousand, twenty-one".