1256303234 has 4 divisors (see below), whose sum is σ = 1884454854. Its totient is φ = 628151616.

The previous prime is 1256303221. The next prime is 1256303273. The reversal of 1256303234 is 4323036521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1176147025 + 80156209 = 34295^2 + 8953^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1256303197 and 1256303206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314075807 + ... + 314075810.

Almost surely, 2^1256303234 is an apocalyptic number.

1256303234 is a deficient number, since it is larger than the sum of its proper divisors (628151620).

1256303234 is an equidigital number, since it uses as much as digits as its factorization.

1256303234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628151619.

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

The square root of 1256303234 is about 35444.3681563094. The cubic root of 1256303234 is about 1079.0249641849.

Adding to 1256303234 its reverse (4323036521), we get a palindrome (5579339755).

The spelling of 1256303234 in words is "one billion, two hundred fifty-six million, three hundred three thousand, two hundred thirty-four".