1235231453 has 4 divisors (see below), whose sum is σ = 1237315068. Its totient is φ = 1233147840.

The previous prime is 1235231449. The next prime is 1235231461. The reversal of 1235231453 is 3541325321.

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 243422404 + 991809049 = 15602^2 + 31493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235231453 - 2² = 1235231449 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 (1235231653) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1040918 + ... + 1042103.

It is an arithmetic number, because the mean of its divisors is an integer number (309328767).

Almost surely, 2^1235231453 is an apocalyptic number.

It is an amenable number.

1235231453 is a deficient number, since it is larger than the sum of its proper divisors (2083615).

1235231453 is an equidigital number, since it uses as much as digits as its factorization.

1235231453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083614.

The product of its digits is 10800, while the sum is 29.

The square root of 1235231453 is about 35145.8596850326. The cubic root of 1235231453 is about 1072.9581441275.

Adding to 1235231453 its reverse (3541325321), we get a palindrome (4776556774).

The spelling of 1235231453 in words is "one billion, two hundred thirty-five million, two hundred thirty-one thousand, four hundred fifty-three".