1342431305 has 4 divisors (see below), whose sum is σ = 1610917572. Its totient is φ = 1073945040.

The previous prime is 1342431289. The next prime is 1342431341. The reversal of 1342431305 is 5031342431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5031342431 = 8221 ⋅612011.

It can be written as a sum of positive squares in 2 ways, for example, as 352951369 + 989479936 = 18787^2 + 31456^2 .

It is not a de Polignac number, because 1342431305 - 2⁴ = 1342431289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134243126 + ... + 134243135.

It is an arithmetic number, because the mean of its divisors is an integer number (402729393).

Almost surely, 2^1342431305 is an apocalyptic number.

It is an amenable number.

1342431305 is a deficient number, since it is larger than the sum of its proper divisors (268486267).

1342431305 is an equidigital number, since it uses as much as digits as its factorization.

1342431305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268486266.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1342431305 is about 36639.2044809928. The cubic root of 1342431305 is about 1103.1401471917.

Adding to 1342431305 its reverse (5031342431), we get a palindrome (6373773736).

The spelling of 1342431305 in words is "one billion, three hundred forty-two million, four hundred thirty-one thousand, three hundred five".