671028031 has 4 divisors (see below), whose sum is σ = 672043864. Its totient is φ = 670012200.

The previous prime is 671028011. The next prime is 671028037. The reversal of 671028031 is 130820176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671028031 - 2²¹ = 668930879 is a prime.

It is a super-2 number, since 2×671028031² = 900557236775473922, 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 (671028037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506925 + ... + 508246.

It is an arithmetic number, because the mean of its divisors is an integer number (168010966).

Almost surely, 2^671028031 is an apocalyptic number.

671028031 is a deficient number, since it is larger than the sum of its proper divisors (1015833).

671028031 is a wasteful number, since it uses less digits than its factorization.

671028031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015832.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 671028031 is about 25904.2087507030. The cubic root of 671028031 is about 875.4813269072.

The spelling of 671028031 in words is "six hundred seventy-one million, twenty-eight thousand, thirty-one".