20431079029 has 2 divisors, whose sum is σ = 20431079030. Its totient is φ = 20431079028.

The previous prime is 20431079003. The next prime is 20431079033. The reversal of 20431079029 is 92097013402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19134358929 + 1296720100 = 138327^2 + 36010^2 .

It is a cyclic number.

It is not a de Polignac number, because 20431079029 - 2¹⁵ = 20431046261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20431079429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215539514 + 10215539515.

It is an arithmetic number, because the mean of its divisors is an integer number (10215539515).

Almost surely, 2^20431079029 is an apocalyptic number.

It is an amenable number.

20431079029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431079029 is an equidigital number, since it uses as much as digits as its factorization.

20431079029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 20431079029 in words is "twenty billion, four hundred thirty-one million, seventy-nine thousand, twenty-nine".