20412231097 has 2 divisors, whose sum is σ = 20412231098. Its totient is φ = 20412231096.

The previous prime is 20412231067. The next prime is 20412231113. The reversal of 20412231097 is 79013221402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13282793001 + 7129438096 = 115251^2 + 84436^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412231097 - 2¹¹ = 20412229049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20412231067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206115548 + 10206115549.

It is an arithmetic number, because the mean of its divisors is an integer number (10206115549).

Almost surely, 2^20412231097 is an apocalyptic number.

It is an amenable number.

20412231097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412231097 is an equidigital number, since it uses as much as digits as its factorization.

20412231097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 20412231097 its reverse (79013221402), we get a palindrome (99425452499).

The spelling of 20412231097 in words is "twenty billion, four hundred twelve million, two hundred thirty-one thousand, ninety-seven".