20353004531 has 2 divisors, whose sum is σ = 20353004532. Its totient is φ = 20353004530.

The previous prime is 20353004519. The next prime is 20353004569. The reversal of 20353004531 is 13540035302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20353004531 - 2²² = 20348810227 is a prime.

It is a super-2 number, since 2×20353004531² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20353004531.

It is not a weakly prime, because it can be changed into another prime (20353004591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176502265 + 10176502266.

It is an arithmetic number, because the mean of its divisors is an integer number (10176502266).

Almost surely, 2^20353004531 is an apocalyptic number.

20353004531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20353004531 is an equidigital number, since it uses as much as digits as its factorization.

20353004531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 20353004531 its reverse (13540035302), we get a palindrome (33893039833).

The spelling of 20353004531 in words is "twenty billion, three hundred fifty-three million, four thousand, five hundred thirty-one".