20351310120 has 192 divisors, whose sum is σ = 67433783040. Its totient is φ = 5322048000.

The previous prime is 20351310107. The next prime is 20351310131. The reversal of 20351310120 is 2101315302.

20351310120 is a `hidden beast` number, since 2 + 0 + 351 + 310 + 1 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20351310093 and 20351310102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3887905 + ... + 3893135.

It is an arithmetic number, because the mean of its divisors is an integer number (351217620).

Almost surely, 2^20351310120 is an apocalyptic number.

20351310120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20351310120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33716891520).

20351310120 is an abundant number, since it is smaller than the sum of its proper divisors (47082472920).

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

20351310120 is a wasteful number, since it uses less digits than its factorization.

20351310120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456 (or 5449 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 20351310120 its reverse (2101315302), we get a palindrome (22452625422).

The spelling of 20351310120 in words is "twenty billion, three hundred fifty-one million, three hundred ten thousand, one hundred twenty".