871131580 has 48 divisors (see below), whose sum is σ = 2064515040. Its totient is φ = 305849600.

The previous prime is 871131553. The next prime is 871131581. The reversal of 871131580 is 85131178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871131581) 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, 61891 + ... + 74650.

It is an arithmetic number, because the mean of its divisors is an integer number (43010730).

Almost surely, 2^871131580 is an apocalyptic number.

It is an amenable number.

871131580 is an abundant number, since it is smaller than the sum of its proper divisors (1193383460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871131580 is a wasteful number, since it uses less digits than its factorization.

871131580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136590 (or 136588 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 871131580 is about 29514.9382516718. The cubic root of 871131580 is about 955.0539812144.

The spelling of 871131580 in words is "eight hundred seventy-one million, one hundred thirty-one thousand, five hundred eighty".