20313220232310 has 128 divisors (see below), whose sum is σ = 51021780332544. Its totient is φ = 5170893911040.

The previous prime is 20313220232293. The next prime is 20313220232339. The reversal of 20313220232310 is 1323202231302.

It is a super-2 number, since 2×20313220232310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23500207 + ... + 24349253.

It is an arithmetic number, because the mean of its divisors is an integer number (398607658848).

Almost surely, 2^{20313220232310} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20313220232310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25510890166272).

20313220232310 is an abundant number, since it is smaller than the sum of its proper divisors (30708560100234).

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

20313220232310 is a wasteful number, since it uses less digits than its factorization.

20313220232310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849518.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20313220232310 its reverse (1323202231302), we get a palindrome (21636422463612).

The spelling of 20313220232310 in words is "twenty trillion, three hundred thirteen billion, two hundred twenty million, two hundred thirty-two thousand, three hundred ten".