1323121300 has 36 divisors (see below), whose sum is σ = 2887807356. Its totient is φ = 526182400.

The previous prime is 1323121279. The next prime is 1323121321. The reversal of 1323121300 is 31213231.

It is an interprime number because it is at equal distance from previous prime (1323121279) and next prime (1323121321).

It can be written as a sum of positive squares in 6 ways, for example, as 95179536 + 1227941764 = 9756^2 + 35042^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20941 + ... + 55540.

It is an arithmetic number, because the mean of its divisors is an integer number (80216871).

Almost surely, 2^1323121300 is an apocalyptic number.

1323121300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323121300 is an abundant number, since it is smaller than the sum of its proper divisors (1564686056).

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

1323121300 is a wasteful number, since it uses less digits than its factorization.

1323121300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76668 (or 76661 counting only the distinct ones).

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

The square root of 1323121300 is about 36374.7343632912. The cubic root of 1323121300 is about 1097.8252625320.

Adding to 1323121300 its reverse (31213231), we get a palindrome (1354334531).

The spelling of 1323121300 in words is "one billion, three hundred twenty-three million, one hundred twenty-one thousand, three hundred".