20331411097 has 2 divisors, whose sum is σ = 20331411098. Its totient is φ = 20331411096.

The previous prime is 20331411091. The next prime is 20331411109. The reversal of 20331411097 is 79011413302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18442726416 + 1888684681 = 135804^2 + 43459^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331411097 - 2²⁷ = 20197193369 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331411091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165705548 + 10165705549.

It is an arithmetic number, because the mean of its divisors is an integer number (10165705549).

Almost surely, 2^20331411097 is an apocalyptic number.

It is an amenable number.

20331411097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331411097 is an equidigital number, since it uses as much as digits as its factorization.

20331411097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

Adding to 20331411097 its reverse (79011413302), we get a palindrome (99342824399).

The spelling of 20331411097 in words is "twenty billion, three hundred thirty-one million, four hundred eleven thousand, ninety-seven".