1232521423 has 16 divisors (see below), whose sum is σ = 1430548480. Its totient is φ = 1040060736.

The previous prime is 1232521421. The next prime is 1232521429. The reversal of 1232521423 is 3241252321.

It is a cyclic number.

It is not a de Polignac number, because 1232521423 - 2¹ = 1232521421 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 (1232521421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199915 + ... + 205987.

It is an arithmetic number, because the mean of its divisors is an integer number (89409280).

Almost surely, 2^1232521423 is an apocalyptic number.

1232521423 is a deficient number, since it is larger than the sum of its proper divisors (198027057).

1232521423 is an equidigital number, since it uses as much as digits as its factorization.

1232521423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6526.

The product of its digits is 2880, while the sum is 25.

The square root of 1232521423 is about 35107.2844720294. The cubic root of 1232521423 is about 1072.1728991630.

Adding to 1232521423 its reverse (3241252321), we get a palindrome (4473773744).

The spelling of 1232521423 in words is "one billion, two hundred thirty-two million, five hundred twenty-one thousand, four hundred twenty-three".