831140404 has 24 divisors (see below), whose sum is σ = 1544666760. Its totient is φ = 389953536.

The previous prime is 831140393. The next prime is 831140417. The reversal of 831140404 is 404041138.

It can be written as a sum of positive squares in 4 ways, for example, as 382124304 + 449016100 = 19548^2 + 21190^2 .

It is a super-2 number, since 2×831140404² = 1381588742322566432, which contains 22 as substring.

It is a congruent number.

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, 4782 + ... + 41050.

It is an arithmetic number, because the mean of its divisors is an integer number (64361115).

Almost surely, 2^831140404 is an apocalyptic number.

It is an amenable number.

831140404 is a deficient number, since it is larger than the sum of its proper divisors (713526356).

831140404 is a wasteful number, since it uses less digits than its factorization.

831140404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36627 (or 36625 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 831140404 is about 28829.5057883412. The cubic root of 831140404 is about 940.2098535545.

The spelling of 831140404 in words is "eight hundred thirty-one million, one hundred forty thousand, four hundred four".