1345431266 has 8 divisors (see below), whose sum is σ = 2022526044. Its totient is φ = 671255920.

The previous prime is 1345431233. The next prime is 1345431281. The reversal of 1345431266 is 6621345431.

It can be written as a sum of positive squares in 2 ways, for example, as 1290893041 + 54538225 = 35929^2 + 7385^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728705 + ... + 730548.

Almost surely, 2^1345431266 is an apocalyptic number.

1345431266 is a deficient number, since it is larger than the sum of its proper divisors (677094778).

1345431266 is a wasteful number, since it uses less digits than its factorization.

1345431266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459716.

The product of its digits is 51840, while the sum is 35.

The square root of 1345431266 is about 36680.1208558532. The cubic root of 1345431266 is about 1103.9612730805.

Adding to 1345431266 its reverse (6621345431), we get a palindrome (7966776697).

The spelling of 1345431266 in words is "one billion, three hundred forty-five million, four hundred thirty-one thousand, two hundred sixty-six".