427331466531 has 8 divisors (see below), whose sum is σ = 633083654160. Its totient is φ = 284887644336.

The previous prime is 427331466503. The next prime is 427331466607. The reversal of 427331466531 is 135664133724.

427331466531 is a `hidden beast` number, since 4 + 2 + 73 + 3 + 1 + 46 + 6 + 531 = 666.

It is not a de Polignac number, because 427331466531 - 2⁹ = 427331466019 is a prime.

It is a super-2 number, since 2×427331466531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (427331465531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7913545650 + ... + 7913545703.

It is an arithmetic number, because the mean of its divisors is an integer number (79135456770).

Almost surely, 2^427331466531 is an apocalyptic number.

427331466531 is a deficient number, since it is larger than the sum of its proper divisors (205752187629).

427331466531 is a wasteful number, since it uses less digits than its factorization.

427331466531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15827091362 (or 15827091356 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The spelling of 427331466531 in words is "four hundred twenty-seven billion, three hundred thirty-one million, four hundred sixty-six thousand, five hundred thirty-one".