1230305453 has 8 divisors (see below), whose sum is σ = 1402882488. Its totient is φ = 1068862464.

The previous prime is 1230305449. The next prime is 1230305507. The reversal of 1230305453 is 3545030321.

It can be written as a sum of positive squares in 4 ways, for example, as 151708489 + 1078596964 = 12317^2 + 32842^2 .

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 1230305453 - 2² = 1230305449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230305053) 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, 2783276 + ... + 2783717.

It is an arithmetic number, because the mean of its divisors is an integer number (175360311).

Almost surely, 2^1230305453 is an apocalyptic number.

1230305453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1230305453 is a deficient number, since it is larger than the sum of its proper divisors (172577035).

1230305453 is a wasteful number, since it uses less digits than its factorization.

1230305453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567023.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 1230305453 is about 35075.7102992940. The cubic root of 1230305453 is about 1071.5299547484.

Adding to 1230305453 its reverse (3545030321), we get a palindrome (4775335774).

The spelling of 1230305453 in words is "one billion, two hundred thirty million, three hundred five thousand, four hundred fifty-three".