2311155040 has 48 divisors (see below), whose sum is σ = 5479920432. Its totient is φ = 921106944.

The previous prime is 2311155037. The next prime is 2311155043. The reversal of 2311155040 is 405511132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2311155037) and next prime (2311155043).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311155043) 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, 18247 + ... + 70393.

It is an arithmetic number, because the mean of its divisors is an integer number (114165009).

Almost surely, 2^2311155040 is an apocalyptic number.

2311155040 is a gapful number since it is divisible by the number (20) 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 2311155040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2739960216).

2311155040 is an abundant number, since it is smaller than the sum of its proper divisors (3168765392).

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

2311155040 is a wasteful number, since it uses less digits than its factorization.

2311155040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52439 (or 52431 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2311155040 is about 48074.4738920771. The cubic root of 2311155040 is about 1322.1366986036.

Adding to 2311155040 its reverse (405511132), we get a palindrome (2716666172).

The spelling of 2311155040 in words is "two billion, three hundred eleven million, one hundred fifty-five thousand, forty".