20313400344 has 32 divisors (see below), whose sum is σ = 51095065920. Its totient is φ = 6729591456.

The previous prime is 20313400333. The next prime is 20313400363. The reversal of 20313400344 is 44300431302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2592382 + ... + 2600205.

It is an arithmetic number, because the mean of its divisors is an integer number (1596720810).

Almost surely, 2^20313400344 is an apocalyptic number.

20313400344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20313400344 is an abundant number, since it is smaller than the sum of its proper divisors (30781665576).

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

20313400344 is a wasteful number, since it uses less digits than its factorization.

20313400344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192759 (or 5192755 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20313400344 its reverse (44300431302), we get a palindrome (64613831646).

The spelling of 20313400344 in words is "twenty billion, three hundred thirteen million, four hundred thousand, three hundred forty-four".