20313131641230 has 32 divisors (see below), whose sum is σ = 48751656395904. Its totient is φ = 5416819498016.

The previous prime is 20313131641193. The next prime is 20313131641237. The reversal of 20313131641230 is 3214613131302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313131641237) 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, 12800449 + ... + 14299571.

It is an arithmetic number, because the mean of its divisors is an integer number (1523489262372).

Almost surely, 2^{20313131641230} is an apocalyptic number.

20313131641230 is an abundant number, since it is smaller than the sum of its proper divisors (28438524754674).

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

20313131641230 is a wasteful number, since it uses less digits than its factorization.

20313131641230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950800.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 20313131641230 its reverse (3214613131302), we get a palindrome (23527744772532).

The spelling of 20313131641230 in words is "twenty trillion, three hundred thirteen billion, one hundred thirty-one million, six hundred forty-one thousand, two hundred thirty".