5313121020 has 96 divisors (see below), whose sum is σ = 16576358400. Its totient is φ = 1412834112.

The previous prime is 5313121019. The next prime is 5313121039. The reversal of 5313121020 is 201213135.

5313121020 is a `hidden beast` number, since 531 + 31 + 2 + 102 + 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 = 5313120984 and 5313121002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180157 + ... + 207563.

It is an arithmetic number, because the mean of its divisors is an integer number (172670400).

Almost surely, 2^5313121020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5313121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8288179200).

5313121020 is an abundant number, since it is smaller than the sum of its proper divisors (11263237380).

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

5313121020 is a wasteful number, since it uses less digits than its factorization.

5313121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27784 (or 27776 counting only the distinct ones).

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

The square root of 5313121020 is about 72891.1587231264. The cubic root of 5313121020 is about 1744.9510001211.

Adding to 5313121020 its reverse (201213135), we get a palindrome (5514334155).

The spelling of 5313121020 in words is "five billion, three hundred thirteen million, one hundred twenty-one thousand, twenty".