10311213320 has 64 divisors (see below), whose sum is σ = 25412065200. Its totient is φ = 3748003840.

The previous prime is 10311213271. The next prime is 10311213323. The reversal of 10311213320 is 2331211301.

It can be written as a sum of positive squares in 8 ways, for example, as 5957061124 + 4354152196 = 77182^2 + 65986^2 .

It is a super-2 number, since 2×10311213320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (10311213323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241721 + ... + 281160.

Almost surely, 2^10311213320 is an apocalyptic number.

10311213320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10311213320 is an abundant number, since it is smaller than the sum of its proper divisors (15100851880).

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

10311213320 is a wasteful number, since it uses less digits than its factorization.

10311213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522938 (or 522934 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 10311213320 its reverse (2331211301), we get a palindrome (12642424621).

The spelling of 10311213320 in words is "ten billion, three hundred eleven million, two hundred thirteen thousand, three hundred twenty".