20231535679 has 2 divisors, whose sum is σ = 20231535680. Its totient is φ = 20231535678.

The previous prime is 20231535637. The next prime is 20231535683. The reversal of 20231535679 is 97653513202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20231535679 - 2⁹ = 20231535167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20231535619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115767839 + 10115767840.

It is an arithmetic number, because the mean of its divisors is an integer number (10115767840).

Almost surely, 2^20231535679 is an apocalyptic number.

20231535679 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231535679 is an equidigital number, since it uses as much as digits as its factorization.

20231535679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 20231535679 in words is "twenty billion, two hundred thirty-one million, five hundred thirty-five thousand, six hundred seventy-nine".