1321233030 has 192 divisors, whose sum is σ = 3949440768. Its totient is φ = 303575040.

The previous prime is 1321233019. The next prime is 1321233041. The reversal of 1321233030 is 303321231.

It is an interprime number because it is at equal distance from previous prime (1321233019) and next prime (1321233041).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1321232994 and 1321233012.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 3599907 + ... + 3600273.

It is an arithmetic number, because the mean of its divisors is an integer number (20570004).

Almost surely, 2^1321233030 is an apocalyptic number.

1321233030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321233030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1974720384).

1321233030 is an abundant number, since it is smaller than the sum of its proper divisors (2628207738).

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

1321233030 is a wasteful number, since it uses less digits than its factorization.

1321233030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1321233030 is about 36348.7693051636. The cubic root of 1321233030 is about 1097.3027663619.

Adding to 1321233030 its reverse (303321231), we get a palindrome (1624554261).

The spelling of 1321233030 in words is "one billion, three hundred twenty-one million, two hundred thirty-three thousand, thirty".