1231134425 has 6 divisors (see below), whose sum is σ = 1526606718. Its totient is φ = 984907520.

The previous prime is 1231134397. The next prime is 1231134427. The reversal of 1231134425 is 5244311321.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 203547289 + 1027587136 = 14267^2 + 32056^2 .

It is not a de Polignac number, because 1231134425 - 2¹⁸ = 1230872281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231134394 and 1231134403.

It is not an unprimeable number, because it can be changed into a prime (1231134427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24622664 + ... + 24622713.

It is an arithmetic number, because the mean of its divisors is an integer number (254434453).

Almost surely, 2^1231134425 is an apocalyptic number.

It is an amenable number.

1231134425 is a deficient number, since it is larger than the sum of its proper divisors (295472293).

1231134425 is an equidigital number, since it uses as much as digits as its factorization.

1231134425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49245387 (or 49245382 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 1231134425 is about 35087.5252048360. The cubic root of 1231134425 is about 1071.7705640754.

Adding to 1231134425 its reverse (5244311321), we get a palindrome (6475445746).

The spelling of 1231134425 in words is "one billion, two hundred thirty-one million, one hundred thirty-four thousand, four hundred twenty-five".