2311440123 has 8 divisors (see below), whose sum is σ = 3097408000. Its totient is φ = 1533216168.

The previous prime is 2311440113. The next prime is 2311440133. The reversal of 2311440123 is 3210441132.

It is an interprime number because it is at equal distance from previous prime (2311440113) and next prime (2311440133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2311440123 - 2⁴ = 2311440107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2311440123.

It is not an unprimeable number, because it can be changed into a prime (2311440113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1935283 + ... + 1936476.

It is an arithmetic number, because the mean of its divisors is an integer number (387176000).

Almost surely, 2^2311440123 is an apocalyptic number.

2311440123 is a deficient number, since it is larger than the sum of its proper divisors (785967877).

2311440123 is a wasteful number, since it uses less digits than its factorization.

2311440123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871961.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2311440123 is about 48077.4388148953. The cubic root of 2311440123 is about 1322.1910586087.

Adding to 2311440123 its reverse (3210441132), we get a palindrome (5521881255).

The spelling of 2311440123 in words is "two billion, three hundred eleven million, four hundred forty thousand, one hundred twenty-three".