1231260367 has 2 divisors, whose sum is σ = 1231260368. Its totient is φ = 1231260366.

The previous prime is 1231260347. The next prime is 1231260383. The reversal of 1231260367 is 7630621321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231260367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231260347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615630183 + 615630184.

It is an arithmetic number, because the mean of its divisors is an integer number (615630184).

Almost surely, 2^1231260367 is an apocalyptic number.

1231260367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231260367 is an equidigital number, since it uses as much as digits as its factorization.

1231260367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1231260367 is about 35089.3198423680. The cubic root of 1231260367 is about 1071.8071093199.

Adding to 1231260367 its reverse (7630621321), we get a palindrome (8861881688).

The spelling of 1231260367 in words is "one billion, two hundred thirty-one million, two hundred sixty thousand, three hundred sixty-seven".