1345431233 has 2 divisors, whose sum is σ = 1345431234. Its totient is φ = 1345431232.

The previous prime is 1345431229. The next prime is 1345431281. The reversal of 1345431233 is 3321345431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 775511104 + 569920129 = 27848^2 + 23873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345431233 - 2² = 1345431229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1345431196 and 1345431205.

It is not a weakly prime, because it can be changed into another prime (1345431293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672715616 + 672715617.

It is an arithmetic number, because the mean of its divisors is an integer number (672715617).

Almost surely, 2^1345431233 is an apocalyptic number.

It is an amenable number.

1345431233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345431233 is an equidigital number, since it uses as much as digits as its factorization.

1345431233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 29.

The square root of 1345431233 is about 36680.1204060183. The cubic root of 1345431233 is about 1103.9612640548.

Adding to 1345431233 its reverse (3321345431), we get a palindrome (4666776664).

The spelling of 1345431233 in words is "one billion, three hundred forty-five million, four hundred thirty-one thousand, two hundred thirty-three".