203123301239 has 2 divisors, whose sum is σ = 203123301240. Its totient is φ = 203123301238.

The previous prime is 203123301209. The next prime is 203123301253. The reversal of 203123301239 is 932103321302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203123301239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203123301209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101561650619 + 101561650620.

It is an arithmetic number, because the mean of its divisors is an integer number (101561650620).

Almost surely, 2^203123301239 is an apocalyptic number.

203123301239 is a deficient number, since it is larger than the sum of its proper divisors (1).

203123301239 is an equidigital number, since it uses as much as digits as its factorization.

203123301239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 29.

The spelling of 203123301239 in words is "two hundred three billion, one hundred twenty-three million, three hundred one thousand, two hundred thirty-nine".