20311230441340 has 24 divisors (see below), whose sum is σ = 42660355676400. Its totient is φ = 8123202319488.

The previous prime is 20311230441323. The next prime is 20311230441347. The reversal of 20311230441340 is 4314403211302.

It is a happy number.

It is a super-3 number, since 3×20311230441340³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20311230441299 and 20311230441308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311230441347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80486937 + ... + 80738896.

It is an arithmetic number, because the mean of its divisors is an integer number (1777514819850).

Almost surely, 2^{20311230441340} is an apocalyptic number.

20311230441340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311230441340 is an abundant number, since it is smaller than the sum of its proper divisors (22349125235060).

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

20311230441340 is a wasteful number, since it uses less digits than its factorization.

20311230441340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161232141 (or 161232139 counting only the distinct ones).

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

Adding to 20311230441340 its reverse (4314403211302), we get a palindrome (24625633652642).

The spelling of 20311230441340 in words is "twenty trillion, three hundred eleven billion, two hundred thirty million, four hundred forty-one thousand, three hundred forty".