1440302234311 has 4 divisors (see below), whose sum is σ = 1440306546592. Its totient is φ = 1440297922032.

The previous prime is 1440302234309. The next prime is 1440302234363. The reversal of 1440302234311 is 1134322030441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1440302234311 - 2¹ = 1440302234309 is a prime.

It is a super-2 number, since 2×1440302234311² (a number of 25 digits) contains 22 as substring.

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 1440302234311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440302234411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608831 + ... + 2338576.

It is an arithmetic number, because the mean of its divisors is an integer number (360076636648).

Almost surely, 2^{1440302234311} is an apocalyptic number.

1440302234311 is a deficient number, since it is larger than the sum of its proper divisors (4312281).

1440302234311 is an equidigital number, since it uses as much as digits as its factorization.

1440302234311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312280.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1440302234311 its reverse (1134322030441), we get a palindrome (2574624264752).

The spelling of 1440302234311 in words is "one trillion, four hundred forty billion, three hundred two million, two hundred thirty-four thousand, three hundred eleven".