231312202001 has 2 divisors, whose sum is σ = 231312202002. Its totient is φ = 231312202000.

The previous prime is 231312201949. The next prime is 231312202007. The reversal of 231312202001 is 100202213132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226066966225 + 5245235776 = 475465^2 + 72424^2 .

It is a cyclic number.

It is not a de Polignac number, because 231312202001 - 2²⁶ = 231245093137 is a prime.

It is not a weakly prime, because it can be changed into another prime (231312202007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656101000 + 115656101001.

It is an arithmetic number, because the mean of its divisors is an integer number (115656101001).

Almost surely, 2^231312202001 is an apocalyptic number.

It is an amenable number.

231312202001 is a deficient number, since it is larger than the sum of its proper divisors (1).

231312202001 is an equidigital number, since it uses as much as digits as its factorization.

231312202001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 231312202001 its reverse (100202213132), we get a palindrome (331514415133).

The spelling of 231312202001 in words is "two hundred thirty-one billion, three hundred twelve million, two hundred two thousand, one".