1253304430340 has 96 divisors (see below), whose sum is σ = 2873639317248. Its totient is φ = 457274880000.

The previous prime is 1253304430327. The next prime is 1253304430351. The reversal of 1253304430340 is 430344033521.

It is a junction number, because it is equal to n+sod(n) for n = 1253304430297 and 1253304430306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1807235 + ... + 2402645.

It is an arithmetic number, because the mean of its divisors is an integer number (29933742888).

Almost surely, 2^{1253304430340} is an apocalyptic number.

1253304430340 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 1253304430340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436819658624).

1253304430340 is an abundant number, since it is smaller than the sum of its proper divisors (1620334886908).

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

1253304430340 is a wasteful number, since it uses less digits than its factorization.

1253304430340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595629 (or 595627 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 1253304430340 its reverse (430344033521), we get a palindrome (1683648463861).

The spelling of 1253304430340 in words is "one trillion, two hundred fifty-three billion, three hundred four million, four hundred thirty thousand, three hundred forty".