831289123080 has 160 divisors (see below), whose sum is σ = 3008982576600. Its totient is φ = 204625004544.

The previous prime is 831289123039. The next prime is 831289123087. The reversal of 831289123080 is 80321982138.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 724238444484 + 107050678596 = 851022^2 + 327186^2 .

It is a super-2 number, since 2×831289123080² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (831289123087) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9825985 + ... + 9910224.

Almost surely, 2^831289123080 is an apocalyptic number.

It is an amenable number.

831289123080 is an abundant number, since it is smaller than the sum of its proper divisors (2177693453520).

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

831289123080 is a wasteful number, since it uses less digits than its factorization.

831289123080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19736245 (or 19736232 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 831289123080 in words is "eight hundred thirty-one billion, two hundred eighty-nine million, one hundred twenty-three thousand, eighty".