1345214257 has 2 divisors, whose sum is σ = 1345214258. Its totient is φ = 1345214256.

The previous prime is 1345214237. The next prime is 1345214287. The reversal of 1345214257 is 7524125431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1307256336 + 37957921 = 36156^2 + 6161^2 .

It is an emirp because it is prime and its reverse (7524125431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345214257 - 2¹⁵ = 1345181489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345214237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672607128 + 672607129.

It is an arithmetic number, because the mean of its divisors is an integer number (672607129).

Almost surely, 2^1345214257 is an apocalyptic number.

It is an amenable number.

1345214257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345214257 is an equidigital number, since it uses as much as digits as its factorization.

1345214257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 1345214257 is about 36677.1626083589. The cubic root of 1345214257 is about 1103.9019160502.

Adding to 1345214257 its reverse (7524125431), we get a palindrome (8869339688).

The spelling of 1345214257 in words is "one billion, three hundred forty-five million, two hundred fourteen thousand, two hundred fifty-seven".