201310121231 has 2 divisors, whose sum is σ = 201310121232. Its totient is φ = 201310121230.

The previous prime is 201310121209. The next prime is 201310121267. The reversal of 201310121231 is 132121013102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201310121231 - 2¹⁴ = 201310104847 is a prime.

It is a super-2 number, since 2×201310121231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201310121281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100655060615 + 100655060616.

It is an arithmetic number, because the mean of its divisors is an integer number (100655060616).

Almost surely, 2^201310121231 is an apocalyptic number.

201310121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

201310121231 is an equidigital number, since it uses as much as digits as its factorization.

201310121231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201310121231 its reverse (132121013102), we get a palindrome (333431134333).

The spelling of 201310121231 in words is "two hundred one billion, three hundred ten million, one hundred twenty-one thousand, two hundred thirty-one".