20312103144102 has 64 divisors (see below), whose sum is σ = 51603990603264. Its totient is φ = 5176326205440.

The previous prime is 20312103144071. The next prime is 20312103144103. The reversal of 20312103144102 is 20144130121302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312103144103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414745243 + ... + 414794214.

It is an arithmetic number, because the mean of its divisors is an integer number (806312353176).

Almost surely, 2^{20312103144102} is an apocalyptic number.

20312103144102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20312103144102 is an abundant number, since it is smaller than the sum of its proper divisors (31291887459162).

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

20312103144102 is a wasteful number, since it uses less digits than its factorization.

20312103144102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829539533.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20312103144102 its reverse (20144130121302), we get a palindrome (40456233265404).

The spelling of 20312103144102 in words is "twenty trillion, three hundred twelve billion, one hundred three million, one hundred forty-four thousand, one hundred two".