1230256033 has 4 divisors (see below), whose sum is σ = 1230605460. Its totient is φ = 1229906608.

The previous prime is 1230256007. The next prime is 1230256063. The reversal of 1230256033 is 3306520321.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 475545249 + 754710784 = 21807^2 + 27472^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230256033 - 2¹³ = 1230247841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230255989 and 1230256007.

It is not an unprimeable number, because it can be changed into a prime (1230256063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169378 + ... + 176491.

It is an arithmetic number, because the mean of its divisors is an integer number (307651365).

Almost surely, 2^1230256033 is an apocalyptic number.

It is an amenable number.

1230256033 is a deficient number, since it is larger than the sum of its proper divisors (349427).

1230256033 is an equidigital number, since it uses as much as digits as its factorization.

1230256033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349426.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 1230256033 is about 35075.0058161079. The cubic root of 1230256033 is about 1071.5156071679.

Adding to 1230256033 its reverse (3306520321), we get a palindrome (4536776354).

The spelling of 1230256033 in words is "one billion, two hundred thirty million, two hundred fifty-six thousand, thirty-three".