1231228390507 has 2 divisors, whose sum is σ = 1231228390508. Its totient is φ = 1231228390506.

The previous prime is 1231228390481. The next prime is 1231228390523. The reversal of 1231228390507 is 7050938221321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231228390507 - 2³⁵ = 1196868652139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231228390537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615614195253 + 615614195254.

It is an arithmetic number, because the mean of its divisors is an integer number (615614195254).

Almost surely, 2^{1231228390507} is an apocalyptic number.

1231228390507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231228390507 is an equidigital number, since it uses as much as digits as its factorization.

1231228390507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 1231228390507 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-eight million, three hundred ninety thousand, five hundred seven".