1312232200 has 24 divisors (see below), whose sum is σ = 3050940330. Its totient is φ = 524892800.

The previous prime is 1312232189. The next prime is 1312232209. The reversal of 1312232200 is 22322131.

It can be written as a sum of positive squares in 3 ways, for example, as 1217870404 + 94361796 = 34898^2 + 9714^2 .

It is not an unprimeable number, because it can be changed into a prime (1312232209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3280381 + ... + 3280780.

Almost surely, 2^1312232200 is an apocalyptic number.

1312232200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312232200 is an abundant number, since it is smaller than the sum of its proper divisors (1738708130).

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

1312232200 is a wasteful number, since it uses less digits than its factorization.

1312232200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561177 (or 6561168 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1312232200 is about 36224.7456857878. The cubic root of 1312232200 is about 1094.8053141782.

Adding to 1312232200 its reverse (22322131), we get a palindrome (1334554331).

The spelling of 1312232200 in words is "one billion, three hundred twelve million, two hundred thirty-two thousand, two hundred".