231133311331201 has 2 divisors, whose sum is σ = 231133311331202. Its totient is φ = 231133311331200.

The previous prime is 231133311331187. The next prime is 231133311331231. The reversal of 231133311331201 is 102133113331132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176356275206400 + 54777036124801 = 13279920^2 + 7401151^2 .

It is a cyclic number.

It is not a de Polignac number, because 231133311331201 - 2⁷ = 231133311331073 is a prime.

It is a super-2 number, since 2×231133311331201² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231133311331201.

It is not a weakly prime, because it can be changed into another prime (231133311331231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115566655665600 + 115566655665601.

It is an arithmetic number, because the mean of its divisors is an integer number (115566655665601).

Almost surely, 2^{231133311331201} is an apocalyptic number.

It is an amenable number.

231133311331201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231133311331201 is an equidigital number, since it uses as much as digits as its factorization.

231133311331201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 231133311331201 its reverse (102133113331132), we get a palindrome (333266424662333).

The spelling of 231133311331201 in words is "two hundred thirty-one trillion, one hundred thirty-three billion, three hundred eleven million, three hundred thirty-one thousand, two hundred one".