2311134520 has 32 divisors (see below), whose sum is σ = 5251547520. Its totient is φ = 915299200.

The previous prime is 2311134509. The next prime is 2311134523. The reversal of 2311134520 is 254311132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2311134491 and 2311134500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311134523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281992 + ... + 290071.

It is an arithmetic number, because the mean of its divisors is an integer number (164110860).

Almost surely, 2^2311134520 is an apocalyptic number.

2311134520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311134520 is an abundant number, since it is smaller than the sum of its proper divisors (2940413000).

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

2311134520 is a wasteful number, since it uses less digits than its factorization.

2311134520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572175 (or 572171 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2311134520 is about 48074.2604727311. The cubic root of 2311134520 is about 1322.1327856502.

Adding to 2311134520 its reverse (254311132), we get a palindrome (2565445652).

The spelling of 2311134520 in words is "two billion, three hundred eleven million, one hundred thirty-four thousand, five hundred twenty".