1231425443 has 8 divisors (see below), whose sum is σ = 1271844288. Its totient is φ = 1191542184.

The previous prime is 1231425439. The next prime is 1231425467. The reversal of 1231425443 is 3445241321.

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 1231425443 - 2² = 1231425439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231425043) 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, 129221 + ... + 138422.

It is an arithmetic number, because the mean of its divisors is an integer number (158980536).

Almost surely, 2^1231425443 is an apocalyptic number.

1231425443 is a deficient number, since it is larger than the sum of its proper divisors (40418845).

1231425443 is a wasteful number, since it uses less digits than its factorization.

1231425443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267793.

The product of its digits is 11520, while the sum is 29.

The square root of 1231425443 is about 35091.6719892341. The cubic root of 1231425443 is about 1071.8550065069.

Adding to 1231425443 its reverse (3445241321), we get a palindrome (4676666764).

The spelling of 1231425443 in words is "one billion, two hundred thirty-one million, four hundred twenty-five thousand, four hundred forty-three".