1231210433 has 2 divisors, whose sum is σ = 1231210434. Its totient is φ = 1231210432.

The previous prime is 1231210423. The next prime is 1231210441. The reversal of 1231210433 is 3340121321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 637411009 + 593799424 = 25247^2 + 24368^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231210433 - 2⁴ = 1231210417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1231210423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615605216 + 615605217.

It is an arithmetic number, because the mean of its divisors is an integer number (615605217).

Almost surely, 2^1231210433 is an apocalyptic number.

It is an amenable number.

1231210433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231210433 is an equidigital number, since it uses as much as digits as its factorization.

1231210433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1231210433 is about 35088.6083081105. The cubic root of 1231210433 is about 1071.7926200098.

Adding to 1231210433 its reverse (3340121321), we get a palindrome (4571331754).

The spelling of 1231210433 in words is "one billion, two hundred thirty-one million, two hundred ten thousand, four hundred thirty-three".