305312503023149 has 2 divisors, whose sum is σ = 305312503023150. Its totient is φ = 305312503023148.

The previous prime is 305312503023127. The next prime is 305312503023173. The reversal of 305312503023149 is 941320305213503.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283012319620900 + 22300183402249 = 16822970^2 + 4722307^2 .

It is a cyclic number.

It is not a de Polignac number, because 305312503023149 - 2¹² = 305312503019053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305312503020149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152656251511574 + 152656251511575.

It is an arithmetic number, because the mean of its divisors is an integer number (152656251511575).

Almost surely, 2^{305312503023149} is an apocalyptic number.

It is an amenable number.

305312503023149 is a deficient number, since it is larger than the sum of its proper divisors (1).

305312503023149 is an equidigital number, since it uses as much as digits as its factorization.

305312503023149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 305312503023149 in words is "three hundred five trillion, three hundred twelve billion, five hundred three million, twenty-three thousand, one hundred forty-nine".