1232531455 has 4 divisors (see below), whose sum is σ = 1479037752. Its totient is φ = 986025160.

The previous prime is 1232531453. The next prime is 1232531477. The reversal of 1232531455 is 5541352321.

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

It is not a de Polignac number, because 1232531455 - 2¹ = 1232531453 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232531453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123253141 + ... + 123253150.

It is an arithmetic number, because the mean of its divisors is an integer number (369759438).

Almost surely, 2^1232531455 is an apocalyptic number.

1232531455 is a deficient number, since it is larger than the sum of its proper divisors (246506297).

1232531455 is an equidigital number, since it uses as much as digits as its factorization.

1232531455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246506296.

The product of its digits is 18000, while the sum is 31.

The square root of 1232531455 is about 35107.4273480698. The cubic root of 1232531455 is about 1072.1758081076.

Adding to 1232531455 its reverse (5541352321), we get a palindrome (6773883776).

The spelling of 1232531455 in words is "one billion, two hundred thirty-two million, five hundred thirty-one thousand, four hundred fifty-five".