20342131344 has 100 divisors (see below), whose sum is σ = 59121236460. Its totient is φ = 6752471040.

The previous prime is 20342131319. The next prime is 20342131351. The reversal of 20342131344 is 44313124302.

20342131344 is a `hidden beast` number, since 2 + 0 + 342 + 1 + 313 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7887571344 + 12454560000 = 88812^2 + 111600^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 279772 + ... + 344900.

Almost surely, 2^20342131344 is an apocalyptic number.

20342131344 is a gapful number since it is divisible by the number (24) 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 20342131344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29560618230).

20342131344 is an abundant number, since it is smaller than the sum of its proper divisors (38779105116).

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

20342131344 is a wasteful number, since it uses less digits than its factorization.

20342131344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65390 (or 65375 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20342131344 its reverse (44313124302), we get a palindrome (64655255646).

The spelling of 20342131344 in words is "twenty billion, three hundred forty-two million, one hundred thirty-one thousand, three hundred forty-four".