1231434272 has 24 divisors (see below), whose sum is σ = 2460575376. Its totient is φ = 606526272.

The previous prime is 1231434271. The next prime is 1231434307. The reversal of 1231434272 is 2724341321.

It is not an unprimeable number, because it can be changed into a prime (1231434271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285038 + ... + 289325.

It is an arithmetic number, because the mean of its divisors is an integer number (102523974).

Almost surely, 2^1231434272 is an apocalyptic number.

It is an amenable number.

1231434272 is a deficient number, since it is larger than the sum of its proper divisors (1229141104).

1231434272 is an equidigital number, since it uses as much as digits as its factorization.

1231434272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574440 (or 574432 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 1231434272 is about 35091.7977880872. The cubic root of 1231434272 is about 1071.8575681412.

Adding to 1231434272 its reverse (2724341321), we get a palindrome (3955775593).

The spelling of 1231434272 in words is "one billion, two hundred thirty-one million, four hundred thirty-four thousand, two hundred seventy-two".