1278231053 has 12 divisors (see below), whose sum is σ = 1418922204. Its totient is φ = 1150512000.

The previous prime is 1278231041. The next prime is 1278231067. The reversal of 1278231053 is 3501328721.

It can be written as a sum of positive squares in 2 ways, for example, as 977312644 + 300918409 = 31262^2 + 17347^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1278231053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278231553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40076 + ... + 64517.

It is an arithmetic number, because the mean of its divisors is an integer number (118243517).

Almost surely, 2^1278231053 is an apocalyptic number.

It is an amenable number.

1278231053 is a deficient number, since it is larger than the sum of its proper divisors (140691151).

1278231053 is a wasteful number, since it uses less digits than its factorization.

1278231053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104716 (or 104705 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1278231053 is about 35752.3573068966. The cubic root of 1278231053 is about 1085.2666430392.

Adding to 1278231053 its reverse (3501328721), we get a palindrome (4779559774).

The spelling of 1278231053 in words is "one billion, two hundred seventy-eight million, two hundred thirty-one thousand, fifty-three".