20120231297 has 2 divisors, whose sum is σ = 20120231298. Its totient is φ = 20120231296.

The previous prime is 20120231293. The next prime is 20120231321. The reversal of 20120231297 is 79213202102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17073080896 + 3047150401 = 130664^2 + 55201^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120231297 - 2² = 20120231293 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120231293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060115648 + 10060115649.

It is an arithmetic number, because the mean of its divisors is an integer number (10060115649).

Almost surely, 2^20120231297 is an apocalyptic number.

It is an amenable number.

20120231297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120231297 is an equidigital number, since it uses as much as digits as its factorization.

20120231297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 20120231297 its reverse (79213202102), we get a palindrome (99333433399).

The spelling of 20120231297 in words is "twenty billion, one hundred twenty million, two hundred thirty-one thousand, two hundred ninety-seven".