231322002001 has 2 divisors, whose sum is σ = 231322002002. Its totient is φ = 231322002000.

The previous prime is 231322001993. The next prime is 231322002007. The reversal of 231322002001 is 100200223132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171127832976 + 60194169025 = 413676^2 + 245345^2 .

It is a cyclic number.

It is not a de Polignac number, because 231322002001 - 2³ = 231322001993 is a prime.

It is not a weakly prime, because it can be changed into another prime (231322002007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661001000 + 115661001001.

It is an arithmetic number, because the mean of its divisors is an integer number (115661001001).

Almost surely, 2^231322002001 is an apocalyptic number.

It is an amenable number.

231322002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322002001 is an equidigital number, since it uses as much as digits as its factorization.

231322002001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 231322002001 its reverse (100200223132), we get a palindrome (331522225133).

The spelling of 231322002001 in words is "two hundred thirty-one billion, three hundred twenty-two million, two thousand, one".