1230311311973 has 2 divisors, whose sum is σ = 1230311311974. Its totient is φ = 1230311311972.

The previous prime is 1230311311963. The next prime is 1230311312059. The reversal of 1230311311973 is 3791131130321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022814663649 + 207496648324 = 1011343^2 + 455518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230311311973 - 2¹⁴ = 1230311295589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230311311903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615155655986 + 615155655987.

It is an arithmetic number, because the mean of its divisors is an integer number (615155655987).

Almost surely, 2^{1230311311973} is an apocalyptic number.

It is an amenable number.

1230311311973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230311311973 is an equidigital number, since it uses as much as digits as its factorization.

1230311311973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 35.

The spelling of 1230311311973 in words is "one trillion, two hundred thirty billion, three hundred eleven million, three hundred eleven thousand, nine hundred seventy-three".