1281323041 has 8 divisors (see below), whose sum is σ = 1313182080. Its totient is φ = 1249855152.

The previous prime is 1281323039. The next prime is 1281323047. The reversal of 1281323041 is 1403231821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1281323041 - 2¹ = 1281323039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1281322997 and 1281323015.

It is not an unprimeable number, because it can be changed into a prime (1281323047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91150 + ... + 104263.

It is an arithmetic number, because the mean of its divisors is an integer number (164147760).

Almost surely, 2^1281323041 is an apocalyptic number.

It is an amenable number.

1281323041 is a deficient number, since it is larger than the sum of its proper divisors (31859039).

1281323041 is an equidigital number, since it uses as much as digits as its factorization.

1281323041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195575.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1281323041 is about 35795.5729245950. The cubic root of 1281323041 is about 1086.1410100921.

Adding to 1281323041 its reverse (1403231821), we get a palindrome (2684554862).

The spelling of 1281323041 in words is "one billion, two hundred eighty-one million, three hundred twenty-three thousand, forty-one".