10311230320 has 80 divisors (see below), whose sum is σ = 25762913568. Its totient is φ = 3823902720.

The previous prime is 10311230317. The next prime is 10311230339. The reversal of 10311230320 is 2303211301.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 10311230294 and 10311230303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34540 + ... + 147700.

Almost surely, 2^10311230320 is an apocalyptic number.

10311230320 is a gapful number since it is divisible by the number (10) 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 10311230320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12881456784).

10311230320 is an abundant number, since it is smaller than the sum of its proper divisors (15451683248).

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

10311230320 is a wasteful number, since it uses less digits than its factorization.

10311230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113258 (or 113252 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10311230320 its reverse (2303211301), we get a palindrome (12614441621).

The spelling of 10311230320 in words is "ten billion, three hundred eleven million, two hundred thirty thousand, three hundred twenty".