20130131310040 has 64 divisors (see below), whose sum is σ = 46399815675360. Its totient is φ = 7855268551680.

The previous prime is 20130131310019. The next prime is 20130131310049. The reversal of 20130131310040 is 4001313103102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130131310049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33679639 + ... + 34272121.

Almost surely, 2^{20130131310040} is an apocalyptic number.

20130131310040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130131310040 is an abundant number, since it is smaller than the sum of its proper divisors (26269684365320).

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

20130131310040 is a wasteful number, since it uses less digits than its factorization.

20130131310040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613252 (or 613248 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20130131310040 its reverse (4001313103102), we get a palindrome (24131444413142).

The spelling of 20130131310040 in words is "twenty trillion, one hundred thirty billion, one hundred thirty-one million, three hundred ten thousand, forty".