1321231300 has 36 divisors (see below), whose sum is σ = 2965942980. Its totient is φ = 510267520.

The previous prime is 1321231283. The next prime is 1321231321. The reversal of 1321231300 is 31321231.

It can be written as a sum of positive squares in 6 ways, for example, as 2669956 + 1318561344 = 1634^2 + 36312^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 224899 + ... + 230698.

It is an arithmetic number, because the mean of its divisors is an integer number (82387305).

Almost surely, 2^1321231300 is an apocalyptic number.

1321231300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321231300 is an abundant number, since it is smaller than the sum of its proper divisors (1644711680).

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

1321231300 is a wasteful number, since it uses less digits than its factorization.

1321231300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455640 (or 455633 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1321231300 is about 36348.7455079264. The cubic root of 1321231300 is about 1097.3022874319.

Adding to 1321231300 its reverse (31321231), we get a palindrome (1352552531).

The spelling of 1321231300 in words is "one billion, three hundred twenty-one million, two hundred thirty-one thousand, three hundred".