1253321300 has 144 divisors (see below), whose sum is σ = 3418114560. Its totient is φ = 387504000.

The previous prime is 1253321297. The next prime is 1253321341. The reversal of 1253321300 is 31233521.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 47 ways as a sum of consecutive naturals, for example, 1069715 + ... + 1070885.

Almost surely, 2^1253321300 is an apocalyptic number.

1253321300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253321300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1709057280).

1253321300 is an abundant number, since it is smaller than the sum of its proper divisors (2164793260).

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

1253321300 is a wasteful number, since it uses less digits than its factorization.

1253321300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1253321300 is about 35402.2781752813. The cubic root of 1253321300 is about 1078.1705711186.

Adding to 1253321300 its reverse (31233521), we get a palindrome (1284554821).

It can be divided in two parts, 12533 and 21300, that added together give a palindrome (33833).

The spelling of 1253321300 in words is "one billion, two hundred fifty-three million, three hundred twenty-one thousand, three hundred".