20312122341340 has 24 divisors (see below), whose sum is σ = 42714783034560. Its totient is φ = 8113548723648.

The previous prime is 20312122341283. The next prime is 20312122341361. The reversal of 20312122341340 is 4314322121302.

It is a super-4 number, since 4×20312122341340⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20312122341299 and 20312122341308.

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, 706248567 + ... + 706277326.

It is an arithmetic number, because the mean of its divisors is an integer number (1779782626440).

Almost surely, 2^{20312122341340} is an apocalyptic number.

20312122341340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312122341340 is an abundant number, since it is smaller than the sum of its proper divisors (22402660693220).

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

20312122341340 is a wasteful number, since it uses less digits than its factorization.

20312122341340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412526621 (or 1412526619 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20312122341340 its reverse (4314322121302), we get a palindrome (24626444462642).

The spelling of 20312122341340 in words is "twenty trillion, three hundred twelve billion, one hundred twenty-two million, three hundred forty-one thousand, three hundred forty".