20311304330140 has 24 divisors (see below), whose sum is σ = 42681967971552. Its totient is φ = 8119144802880.

The previous prime is 20311304330131. The next prime is 20311304330173. The reversal of 20311304330140 is 4103340311302.

It is a super-2 number, since 2×20311304330140² (a number of 27 digits) contains 22 as substring.

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, 336027099 + ... + 336087538.

It is an arithmetic number, because the mean of its divisors is an integer number (1778415332148).

Almost surely, 2^{20311304330140} is an apocalyptic number.

20311304330140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311304330140 is an abundant number, since it is smaller than the sum of its proper divisors (22370663641412).

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

20311304330140 is a wasteful number, since it uses less digits than its factorization.

20311304330140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672116157 (or 672116155 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20311304330140 its reverse (4103340311302), we get a palindrome (24414644641442).

The spelling of 20311304330140 in words is "twenty trillion, three hundred eleven billion, three hundred four million, three hundred thirty thousand, one hundred forty".