20313315440340 has 96 divisors (see below), whose sum is σ = 61256414782080. Its totient is φ = 4999877792256.

The previous prime is 20313315440323. The next prime is 20313315440387. The reversal of 20313315440340 is 4304451331302.

It is a congruent number.

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, 11357467 + ... + 13023773.

It is an arithmetic number, because the mean of its divisors is an integer number (638087653980).

Almost surely, 2^{20313315440340} is an apocalyptic number.

20313315440340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20313315440340 is an abundant number, since it is smaller than the sum of its proper divisors (40943099341740).

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

20313315440340 is a wasteful number, since it uses less digits than its factorization.

20313315440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681961 (or 1681959 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 20313315440340 its reverse (4304451331302), we get a palindrome (24617766771642).

The spelling of 20313315440340 in words is "twenty trillion, three hundred thirteen billion, three hundred fifteen million, four hundred forty thousand, three hundred forty".