10311211320 has 64 divisors (see below), whose sum is σ = 31931504640. Its totient is φ = 2660956800.

The previous prime is 10311211303. The next prime is 10311211333. The reversal of 10311211320 is 2311211301.

It is a happy number.

It is a super-2 number, since 2×10311211320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10311211320.

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, 1382196 + ... + 1389635.

It is an arithmetic number, because the mean of its divisors is an integer number (498929760).

Almost surely, 2^10311211320 is an apocalyptic number.

10311211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10311211320 is an abundant number, since it is smaller than the sum of its proper divisors (21620293320).

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

10311211320 is a wasteful number, since it uses less digits than its factorization.

10311211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771876 (or 2771872 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10311211320 its reverse (2311211301), we get a palindrome (12622422621).

The spelling of 10311211320 in words is "ten billion, three hundred eleven million, two hundred eleven thousand, three hundred twenty".