20301231239 has 2 divisors, whose sum is σ = 20301231240. Its totient is φ = 20301231238.

The previous prime is 20301231193. The next prime is 20301231257. The reversal of 20301231239 is 93213210302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20301231239 - 2¹² = 20301227143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20301231259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150615619 + 10150615620.

It is an arithmetic number, because the mean of its divisors is an integer number (10150615620).

Almost surely, 2^20301231239 is an apocalyptic number.

20301231239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20301231239 is an equidigital number, since it uses as much as digits as its factorization.

20301231239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 20301231239 in words is "twenty billion, three hundred one million, two hundred thirty-one thousand, two hundred thirty-nine".