1440423313331 has 4 divisors (see below), whose sum is σ = 1451765229312. Its totient is φ = 1429081397352.

The previous prime is 1440423313309. The next prime is 1440423313361. The reversal of 1440423313331 is 1333133240441.

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 1440423313331 - 2²⁶ = 1440356204467 is a prime.

It is a super-2 number, since 2×1440423313331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440423313361) 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, 5670957800 + ... + 5670958053.

It is an arithmetic number, because the mean of its divisors is an integer number (362941307328).

Almost surely, 2^{1440423313331} is an apocalyptic number.

1440423313331 is a deficient number, since it is larger than the sum of its proper divisors (11341915981).

1440423313331 is a wasteful number, since it uses less digits than its factorization.

1440423313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11341915980.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 1440423313331 its reverse (1333133240441), we get a palindrome (2773556553772).

The spelling of 1440423313331 in words is "one trillion, four hundred forty billion, four hundred twenty-three million, three hundred thirteen thousand, three hundred thirty-one".