1340433454331 has 4 divisors (see below), whose sum is σ = 1340525336064. Its totient is φ = 1340341572600.

The previous prime is 1340433454307. The next prime is 1340433454351. The reversal of 1340433454331 is 1334543340431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340433454331 is a prime.

It is a super-2 number, since 2×1340433454331² (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 (1340433454351) 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, 45918980 + ... + 45948161.

It is an arithmetic number, because the mean of its divisors is an integer number (335131334016).

Almost surely, 2^{1340433454331} is an apocalyptic number.

1340433454331 is a deficient number, since it is larger than the sum of its proper divisors (91881733).

1340433454331 is an equidigital number, since it uses as much as digits as its factorization.

1340433454331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91881732.

The product of its (nonzero) digits is 311040, while the sum is 38.

Adding to 1340433454331 its reverse (1334543340431), we get a palindrome (2674976794762).

The spelling of 1340433454331 in words is "one trillion, three hundred forty billion, four hundred thirty-three million, four hundred fifty-four thousand, three hundred thirty-one".