20302450031 has 2 divisors, whose sum is σ = 20302450032. Its totient is φ = 20302450030.

The previous prime is 20302450027. The next prime is 20302450061. The reversal of 20302450031 is 13005420302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20302450031 - 2² = 20302450027 is a prime.

It is a super-2 number, since 2×20302450031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20302449985 and 20302450012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302450001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151225015 + 10151225016.

It is an arithmetic number, because the mean of its divisors is an integer number (10151225016).

Almost surely, 2^20302450031 is an apocalyptic number.

20302450031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302450031 is an equidigital number, since it uses as much as digits as its factorization.

20302450031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 20302450031 its reverse (13005420302), we get a palindrome (33307870333).

The spelling of 20302450031 in words is "twenty billion, three hundred two million, four hundred fifty thousand, thirty-one".