231312311201 has 2 divisors, whose sum is σ = 231312311202. Its totient is φ = 231312311200.

The previous prime is 231312311189. The next prime is 231312311221. The reversal of 231312311201 is 102113213132.

It is a happy number.

It is an a-pointer prime, because the next prime (231312311221) can be obtained adding 231312311201 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221182090000 + 10130221201 = 470300^2 + 100649^2 .

It is a cyclic number.

It is not a de Polignac number, because 231312311201 - 2¹⁴ = 231312294817 is a prime.

It is not a weakly prime, because it can be changed into another prime (231312311221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656155600 + 115656155601.

It is an arithmetic number, because the mean of its divisors is an integer number (115656155601).

Almost surely, 2^231312311201 is an apocalyptic number.

It is an amenable number.

231312311201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231312311201 is an equidigital number, since it uses as much as digits as its factorization.

231312311201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231312311201 its reverse (102113213132), we get a palindrome (333425524333).

It can be divided in two parts, 23131 and 2311201, that added together give a palindrome (2334332).

The spelling of 231312311201 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred eleven thousand, two hundred one".