1231404200 has 48 divisors (see below), whose sum is σ = 3083253180. Its totient is φ = 454671360.

The previous prime is 1231404169. The next prime is 1231404203. The reversal of 1231404200 is 24041321.

It can be written as a sum of positive squares in 6 ways, for example, as 453775204 + 777628996 = 21302^2 + 27886^2 .

It is not an unprimeable number, because it can be changed into a prime (1231404203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234209 + ... + 239408.

Almost surely, 2^1231404200 is an apocalyptic number.

1231404200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231404200 is an abundant number, since it is smaller than the sum of its proper divisors (1851848980).

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

1231404200 is a wasteful number, since it uses less digits than its factorization.

1231404200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473646 (or 473637 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1231404200 is about 35091.3693092760. The cubic root of 1231404200 is about 1071.8488430408.

Adding to 1231404200 its reverse (24041321), we get a palindrome (1255445521).

The spelling of 1231404200 in words is "one billion, two hundred thirty-one million, four hundred four thousand, two hundred".