20323001340 has 36 divisors (see below), whose sum is σ = 61646437944. Its totient is φ = 5419466976.

The previous prime is 20323001329. The next prime is 20323001341. The reversal of 20323001340 is 4310032302.

20323001340 is a `hidden beast` number, since 2 + 0 + 323 + 0 + 0 + 1 + 340 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323001341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56452602 + ... + 56452961.

It is an arithmetic number, because the mean of its divisors is an integer number (1712401054).

Almost surely, 2^20323001340 is an apocalyptic number.

20323001340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20323001340 is an abundant number, since it is smaller than the sum of its proper divisors (41323436604).

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

20323001340 is a wasteful number, since it uses less digits than its factorization.

20323001340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112905578 (or 112905573 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20323001340 its reverse (4310032302), we get a palindrome (24633033642).

The spelling of 20323001340 in words is "twenty billion, three hundred twenty-three million, one thousand, three hundred forty".