1275281323 has 2 divisors, whose sum is σ = 1275281324. Its totient is φ = 1275281322.

The previous prime is 1275281309. The next prime is 1275281341. The reversal of 1275281323 is 3231825721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1275281323 - 2⁵ = 1275281291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1275281393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637640661 + 637640662.

It is an arithmetic number, because the mean of its divisors is an integer number (637640662).

Almost surely, 2^1275281323 is an apocalyptic number.

1275281323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275281323 is an equidigital number, since it uses as much as digits as its factorization.

1275281323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 1275281323 is about 35711.0812353813. The cubic root of 1275281323 is about 1084.4311891787.

The spelling of 1275281323 in words is "one billion, two hundred seventy-five million, two hundred eighty-one thousand, three hundred twenty-three".