1231133347 has 2 divisors, whose sum is σ = 1231133348. Its totient is φ = 1231133346.

The previous prime is 1231133269. The next prime is 1231133357. The reversal of 1231133347 is 7433311321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231133347 - 2¹⁵ = 1231100579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231133357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615566673 + 615566674.

It is an arithmetic number, because the mean of its divisors is an integer number (615566674).

Almost surely, 2^1231133347 is an apocalyptic number.

1231133347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231133347 is an equidigital number, since it uses as much as digits as its factorization.

1231133347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 28.

The square root of 1231133347 is about 35087.5098432476. The cubic root of 1231133347 is about 1071.7702512557.

Adding to 1231133347 its reverse (7433311321), we get a palindrome (8664444668).

The spelling of 1231133347 in words is "one billion, two hundred thirty-one million, one hundred thirty-three thousand, three hundred forty-seven".