1231260347 has 2 divisors, whose sum is σ = 1231260348. Its totient is φ = 1231260346.

The previous prime is 1231260341. The next prime is 1231260367. The reversal of 1231260347 is 7430621321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231260347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231260341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615630173 + 615630174.

It is an arithmetic number, because the mean of its divisors is an integer number (615630174).

Almost surely, 2^1231260347 is an apocalyptic number.

1231260347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231260347 is an equidigital number, since it uses as much as digits as its factorization.

1231260347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 1231260347 is about 35089.3195573810. The cubic root of 1231260347 is about 1071.8071035166.

Adding to 1231260347 its reverse (7430621321), we get a palindrome (8661881668).

The spelling of 1231260347 in words is "one billion, two hundred thirty-one million, two hundred sixty thousand, three hundred forty-seven".