671262531 has 8 divisors (see below), whose sum is σ = 896935104. Its totient is φ = 446549160.

The previous prime is 671262523. The next prime is 671262541. The reversal of 671262531 is 135262176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671262531 - 2³ = 671262523 is a prime.

It is a super-2 number, since 2×671262531² = 901186771049051922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 671262492 and 671262501.

It is not an unprimeable number, because it can be changed into a prime (671262541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238165 + ... + 240966.

It is an arithmetic number, because the mean of its divisors is an integer number (112116888).

Almost surely, 2^671262531 is an apocalyptic number.

671262531 is a deficient number, since it is larger than the sum of its proper divisors (225672573).

671262531 is a wasteful number, since it uses less digits than its factorization.

671262531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479601.

The product of its digits is 15120, while the sum is 33.

The square root of 671262531 is about 25908.7346468329. The cubic root of 671262531 is about 875.5832980378.

The spelling of 671262531 in words is "six hundred seventy-one million, two hundred sixty-two thousand, five hundred thirty-one".