871774431 has 16 divisors (see below), whose sum is σ = 1298965248. Its totient is φ = 515460800.

The previous prime is 871774391. The next prime is 871774439. The reversal of 871774431 is 134477178.

It is a cyclic number.

It is not a de Polignac number, because 871774431 - 2¹⁰ = 871773407 is a prime.

It is a super-2 number, since 2×871774431² = 1519981317090747522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871774439) 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, 320811 + ... + 323516.

It is an arithmetic number, because the mean of its divisors is an integer number (81185328).

Almost surely, 2^871774431 is an apocalyptic number.

871774431 is a deficient number, since it is larger than the sum of its proper divisors (427190817).

871774431 is a wasteful number, since it uses less digits than its factorization.

871774431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644382.

The product of its digits is 131712, while the sum is 42.

The square root of 871774431 is about 29525.8265083300. The cubic root of 871774431 is about 955.2888506110.

The spelling of 871774431 in words is "eight hundred seventy-one million, seven hundred seventy-four thousand, four hundred thirty-one".