831300140 has 24 divisors (see below), whose sum is σ = 1904433552. Its totient is φ = 302290880.

The previous prime is 831300091. The next prime is 831300191. The reversal of 831300140 is 41003138.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889099 + ... + 1889538.

It is an arithmetic number, because the mean of its divisors is an integer number (79351398).

Almost surely, 2^831300140 is an apocalyptic number.

It is an amenable number.

831300140 is an abundant number, since it is smaller than the sum of its proper divisors (1073133412).

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

831300140 is a wasteful number, since it uses less digits than its factorization.

831300140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778657 (or 3778655 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 831300140 is about 28832.2760114425. The cubic root of 831300140 is about 940.2700823438.

Adding to 831300140 its reverse (41003138), we get a palindrome (872303278).

The spelling of 831300140 in words is "eight hundred thirty-one million, three hundred thousand, one hundred forty".