671807311 has 16 divisors (see below), whose sum is σ = 780731136. Its totient is φ = 566202816.

The previous prime is 671807291. The next prime is 671807327. The reversal of 671807311 is 113708176.

It is a cyclic number.

It is not a de Polignac number, because 671807311 - 2¹³ = 671799119 is a prime.

It is a super-2 number, since 2×671807311² = 902650126226101442, 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 (671807351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99340 + ... + 105886.

It is an arithmetic number, because the mean of its divisors is an integer number (48795696).

Almost surely, 2^671807311 is an apocalyptic number.

671807311 is a deficient number, since it is larger than the sum of its proper divisors (108923825).

671807311 is a wasteful number, since it uses less digits than its factorization.

671807311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 671807311 is about 25919.2459573962. The cubic root of 671807311 is about 875.8201012083.

The spelling of 671807311 in words is "six hundred seventy-one million, eight hundred seven thousand, three hundred eleven".