831042400 has 36 divisors (see below), whose sum is σ = 2028784212. Its totient is φ = 332416640.

The previous prime is 831042383. The next prime is 831042403. The reversal of 831042400 is 4240138.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831042403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 518602 + ... + 520201.

It is an arithmetic number, because the mean of its divisors is an integer number (56355117).

Almost surely, 2^831042400 is an apocalyptic number.

831042400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

831042400 is an abundant number, since it is smaller than the sum of its proper divisors (1197741812).

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

831042400 is a wasteful number, since it uses less digits than its factorization.

831042400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038823 (or 1038810 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 831042400 is about 28827.8060212705. The cubic root of 831042400 is about 940.1728971237.

Adding to 831042400 its reverse (4240138), we get a palindrome (835282538).

The spelling of 831042400 in words is "eight hundred thirty-one million, forty-two thousand, four hundred".